Index: src/wp-admin/includes/admin.php
===================================================================
--- src/wp-admin/includes/admin.php	(revision 38395)
+++ src/wp-admin/includes/admin.php	(working copy)
@@ -50,7 +50,6 @@
 require_once(ABSPATH . 'wp-admin/includes/post.php');
 
 /** WordPress Administration Screen API */
-require_once(ABSPATH . 'wp-admin/includes/class-wp-screen.php');
 require_once(ABSPATH . 'wp-admin/includes/screen.php');
 
 /** WordPress Taxonomy Administration API */
@@ -60,8 +59,6 @@
 require_once(ABSPATH . 'wp-admin/includes/template.php');
 
 /** WordPress List Table Administration API and base class */
-require_once(ABSPATH . 'wp-admin/includes/class-wp-list-table.php');
-require_once(ABSPATH . 'wp-admin/includes/class-wp-list-table-compat.php');
 require_once(ABSPATH . 'wp-admin/includes/list-table.php');
 
 /** WordPress Theme Administration API */
@@ -70,9 +67,6 @@
 /** WordPress User Administration API */
 require_once(ABSPATH . 'wp-admin/includes/user.php');
 
-/** WordPress Site Icon API */
-require_once(ABSPATH . 'wp-admin/includes/class-wp-site-icon.php');
-
 /** WordPress Update Administration API */
 require_once(ABSPATH . 'wp-admin/includes/update.php');
 
Index: src/wp-admin/includes/ajax-actions.php
===================================================================
--- src/wp-admin/includes/ajax-actions.php	(revision 38397)
+++ src/wp-admin/includes/ajax-actions.php	(working copy)
@@ -1507,7 +1507,6 @@
 
 	$args['pagenum'] = ! empty( $_POST['page'] ) ? absint( $_POST['page'] ) : 1;
 
-	require(ABSPATH . WPINC . '/class-wp-editor.php');
 	$results = _WP_Editors::wp_link_query( $args );
 
 	if ( ! isset( $results ) )
@@ -3137,7 +3136,6 @@
  */
 function wp_ajax_press_this_save_post() {
 	if ( empty( $GLOBALS['wp_press_this'] ) ) {
-		include( ABSPATH . 'wp-admin/includes/class-wp-press-this.php' );
 		$GLOBALS['wp_press_this'] = new WP_Press_This();
 	}
 
@@ -3153,7 +3151,6 @@
  */
 function wp_ajax_press_this_add_category() {
 	if ( empty( $GLOBALS['wp_press_this'] ) ) {
-		include( ABSPATH . 'wp-admin/includes/class-wp-press-this.php' );
 		$GLOBALS['wp_press_this'] = new WP_Press_This();
 	}
 
@@ -3183,7 +3180,6 @@
 
 	switch ( $context ) {
 		case 'site-icon':
-			require_once ABSPATH . '/wp-admin/includes/class-wp-site-icon.php';
 			$wp_site_icon = new WP_Site_Icon();
 
 			// Skip creating a new attachment if the attachment is a Site Icon.
@@ -3332,7 +3328,6 @@
 		wp_send_json_error( $status );
 	}
 
-	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
 	include_once( ABSPATH . 'wp-admin/includes/theme.php' );
 
 	$api = themes_api( 'theme_information', array(
@@ -3439,8 +3434,6 @@
 		wp_send_json_error( $status );
 	}
 
-	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
-
 	$current = get_site_transient( 'update_themes' );
 	if ( empty( $current ) ) {
 		wp_update_themes();
@@ -3590,7 +3583,6 @@
 		wp_send_json_error( $status );
 	}
 
-	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
 	include_once( ABSPATH . 'wp-admin/includes/plugin-install.php' );
 
 	$api = plugins_api( 'plugin_information', array(
@@ -3698,8 +3690,6 @@
 		$status['oldVersion'] = sprintf( __( 'Version %s' ), $plugin_data['Version'] );
 	}
 
-	include_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
-
 	wp_update_plugins();
 
 	$skin     = new WP_Ajax_Upgrader_Skin();
Index: src/wp-admin/includes/class-ftp.php
===================================================================
--- src/wp-admin/includes/class-ftp.php	(revision 38395)
+++ src/wp-admin/includes/class-ftp.php	(working copy)
@@ -903,8 +903,6 @@
 	$mod_sockets = extension_loaded( 'sockets' );
 }
 
-require_once dirname( __FILE__ ) . "/class-ftp-" . ( $mod_sockets ? "sockets" : "pure" ) . ".php";
-
 if ( $mod_sockets ) {
 	class ftp extends ftp_sockets {}
 } else {
Index: src/wp-admin/includes/class-wp-filesystem-ftpsockets.php
===================================================================
--- src/wp-admin/includes/class-wp-filesystem-ftpsockets.php	(revision 38395)
+++ src/wp-admin/includes/class-wp-filesystem-ftpsockets.php	(working copy)
@@ -30,10 +30,6 @@
 		$this->method = 'ftpsockets';
 		$this->errors = new WP_Error();
 
-		// Check if possible to use ftp functions.
-		if ( ! @include_once( ABSPATH . 'wp-admin/includes/class-ftp.php' ) ) {
-			return;
-		}
 		$this->ftp = new ftp();
 
 		if ( empty($opt['port']) )
Index: src/wp-admin/includes/class-wp-upgrader.php
===================================================================
--- src/wp-admin/includes/class-wp-upgrader.php	(revision 38395)
+++ src/wp-admin/includes/class-wp-upgrader.php	(working copy)
@@ -9,39 +9,6 @@
  * @since 2.8.0
  */
 
-/** WP_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader-skin.php';
-
-/** Plugin_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader-skin.php';
-
-/** Theme_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader-skin.php';
-
-/** Bulk_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-bulk-upgrader-skin.php';
-
-/** Bulk_Plugin_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-bulk-plugin-upgrader-skin.php';
-
-/** Bulk_Theme_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-bulk-theme-upgrader-skin.php';
-
-/** Plugin_Installer_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-plugin-installer-skin.php';
-
-/** Theme_Installer_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-theme-installer-skin.php';
-
-/** Language_Pack_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader-skin.php';
-
-/** Automatic_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-automatic-upgrader-skin.php';
-
-/** WP_Ajax_Upgrader_Skin class */
-require_once ABSPATH . 'wp-admin/includes/class-wp-ajax-upgrader-skin.php';
-
 /**
  * Core class used for upgrading/installing a local set of files via
  * the Filesystem Abstraction classes from a Zip file.
@@ -887,21 +854,3 @@
 	}
 
 }
-
-/** Plugin_Upgrader class */
-require_once ABSPATH . 'wp-admin/includes/class-plugin-upgrader.php';
-
-/** Theme_Upgrader class */
-require_once ABSPATH . 'wp-admin/includes/class-theme-upgrader.php';
-
-/** Language_Pack_Upgrader class */
-require_once ABSPATH . 'wp-admin/includes/class-language-pack-upgrader.php';
-
-/** Core_Upgrader class */
-require_once ABSPATH . 'wp-admin/includes/class-core-upgrader.php';
-
-/** File_Upload_Upgrader class */
-require_once ABSPATH . 'wp-admin/includes/class-file-upload-upgrader.php';
-
-/** WP_Automatic_Updater class */
-require_once ABSPATH . 'wp-admin/includes/class-wp-automatic-updater.php';
Index: src/wp-admin/includes/deprecated.php
===================================================================
--- src/wp-admin/includes/deprecated.php	(revision 38395)
+++ src/wp-admin/includes/deprecated.php	(working copy)
@@ -749,9 +749,6 @@
 
 	static $num = 1;
 
-	if ( ! class_exists( '_WP_Editors', false ) )
-		require_once( ABSPATH . WPINC . '/class-wp-editor.php' );
-
 	$editor_id = 'content' . $num++;
 
 	$set = array(
@@ -1144,7 +1141,6 @@
 	if ( !empty($feedback) )
 		add_filter('update_feedback', $feedback);
 
-	include( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
 	$upgrader = new Core_Upgrader();
 	return $upgrader->upgrade($current);
 
@@ -1167,7 +1163,6 @@
 	if ( !empty($feedback) )
 		add_filter('update_feedback', $feedback);
 
-	include( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
 	$upgrader = new Plugin_Upgrader();
 	return $upgrader->upgrade($plugin);
 }
@@ -1189,7 +1184,6 @@
 	if ( !empty($feedback) )
 		add_filter('update_feedback', $feedback);
 
-	include( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
 	$upgrader = new Theme_Upgrader();
 	return $upgrader->upgrade($theme);
 }
Index: src/wp-admin/includes/file.php
===================================================================
--- src/wp-admin/includes/file.php	(revision 38395)
+++ src/wp-admin/includes/file.php	(working copy)
@@ -737,8 +737,6 @@
 
 	mbstring_binary_safe_encoding();
 
-	require_once(ABSPATH . 'wp-admin/includes/class-pclzip.php');
-
 	$archive = new PclZip($file);
 
 	$archive_files = $archive->extract(PCLZIP_OPT_EXTRACT_AS_STRING);
@@ -886,15 +884,23 @@
 function WP_Filesystem( $args = false, $context = false, $allow_relaxed_file_ownership = false ) {
 	global $wp_filesystem;
 
-	require_once(ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php');
-
 	$method = get_filesystem_method( $args, $context, $allow_relaxed_file_ownership );
 
 	if ( ! $method )
 		return false;
 
-	if ( ! class_exists( "WP_Filesystem_$method" ) ) {
+	$map = array(
+		'base' => 'WP_Filesystem_Base',
+		'direct' => 'WP_Filesystem_Direct',
+		'ftpext' => 'WP_Filesystem_FTPext',
+		'ftpsockets' => 'WP_Filesystem_ftpsockets',
+		'ssh2' => 'WP_Filesystem_SSH2',
+	);
 
+	$classname = $map[ strtolower( $method ) ];
+
+	if ( ! class_exists( $classname ) ) {
+
 		/**
 		 * Filters the path for a specific filesystem method class file.
 		 *
@@ -907,14 +913,12 @@
 		 */
 		$abstraction_file = apply_filters( 'filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method );
 
-		if ( ! file_exists($abstraction_file) )
+		if ( ! file_exists( $abstraction_file ) ) {
 			return;
-
-		require_once($abstraction_file);
+		}
 	}
-	$method = "WP_Filesystem_$method";
 
-	$wp_filesystem = new $method($args);
+	$wp_filesystem = new $classname( $args );
 
 	//Define the timeouts for the connections. Only available after the construct is called to allow for per-transport overriding of the default.
 	if ( ! defined('FS_CONNECT_TIMEOUT') )
Index: src/wp-admin/includes/list-table.php
===================================================================
--- src/wp-admin/includes/list-table.php	(revision 38395)
+++ src/wp-admin/includes/list-table.php	(working copy)
@@ -40,9 +40,6 @@
 	);
 
 	if ( isset( $core_classes[ $class ] ) ) {
-		foreach ( (array) $core_classes[ $class ] as $required )
-			require_once( ABSPATH . 'wp-admin/includes/class-wp-' . $required . '-list-table.php' );
-
 		if ( isset( $args['screen'] ) )
 			$args['screen'] = convert_to_screen( $args['screen'] );
 		elseif ( isset( $GLOBALS['hook_suffix'] ) )
Index: src/wp-admin/includes/nav-menu.php
===================================================================
--- src/wp-admin/includes/nav-menu.php	(revision 38395)
+++ src/wp-admin/includes/nav-menu.php	(working copy)
@@ -7,12 +7,6 @@
  * @since 3.0.0
  */
 
-/** Walker_Nav_Menu_Edit class */
-require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-edit.php' );
-
-/** Walker_Nav_Menu_Checklist class */
-require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-checklist.php' );
-
 /**
  * Prints the appropriate response to a menu quick search.
  *
Index: src/wp-admin/includes/template.php
===================================================================
--- src/wp-admin/includes/template.php	(revision 38395)
+++ src/wp-admin/includes/template.php	(working copy)
@@ -8,12 +8,6 @@
  * @subpackage Administration
  */
 
-/** Walker_Category_Checklist class */
-require_once( ABSPATH . 'wp-admin/includes/class-walker-category-checklist.php' );
-
-/** WP_Internal_Pointers class */
-require_once( ABSPATH . 'wp-admin/includes/class-wp-internal-pointers.php' );
-
 //
 // Category Checklists
 //
Index: src/wp-admin/includes/translation-install.php
===================================================================
--- src/wp-admin/includes/translation-install.php	(revision 38395)
+++ src/wp-admin/includes/translation-install.php	(working copy)
@@ -202,7 +202,6 @@
 	}
 	$translation = (object) $translation;
 
-	require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
 	$skin = new Automatic_Upgrader_Skin;
 	$upgrader = new Language_Pack_Upgrader( $skin );
 	$translation->type = 'core';
@@ -228,7 +227,6 @@
 		return false;
 	}
 
-	require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
 	$skin = new Automatic_Upgrader_Skin;
 	$upgrader = new Language_Pack_Upgrader( $skin );
 	$upgrader->init();
Index: src/wp-admin/includes/update.php
===================================================================
--- src/wp-admin/includes/update.php	(revision 38395)
+++ src/wp-admin/includes/update.php	(working copy)
@@ -74,8 +74,6 @@
 	if ( ! $updates || empty( $updates->updates ) )
 		return false;
 
-	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
-
 	$auto_update = false;
 	$upgrader = new WP_Automatic_Updater;
 	foreach ( $updates->updates as $update ) {
Index: src/wp-admin/install.php
===================================================================
--- src/wp-admin/install.php	(revision 38395)
+++ src/wp-admin/install.php	(working copy)
@@ -41,9 +41,6 @@
 /** Load WordPress Translation Install API */
 require_once( ABSPATH . 'wp-admin/includes/translation-install.php' );
 
-/** Load wpdb */
-require_once( ABSPATH . WPINC . '/wp-db.php' );
-
 nocache_headers();
 
 $step = isset( $_GET['step'] ) ? (int) $_GET['step'] : 0;
Index: src/wp-admin/press-this.php
===================================================================
--- src/wp-admin/press-this.php	(revision 38397)
+++ src/wp-admin/press-this.php	(working copy)
@@ -23,7 +23,6 @@
  * @global WP_Press_This $wp_press_this
  */
 if ( empty( $GLOBALS['wp_press_this'] ) ) {
-	include( ABSPATH . 'wp-admin/includes/class-wp-press-this.php' );
 	$GLOBALS['wp_press_this'] = new WP_Press_This();
 }
 
Index: src/wp-admin/update-core.php
===================================================================
--- src/wp-admin/update-core.php	(revision 38395)
+++ src/wp-admin/update-core.php	(working copy)
@@ -163,7 +163,6 @@
 		_e('You have the latest version of WordPress.');
 
 		if ( wp_http_supports( array( 'ssl' ) ) ) {
-			require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
 			$upgrader = new WP_Automatic_Updater;
 			$future_minor_update = (object) array(
 				'current'       => $wp_version . '.1.next.minor',
@@ -187,7 +186,6 @@
 	}
 
 	if ( isset( $updates[0] ) && $updates[0]->response == 'development' ) {
-		require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
 		$upgrader = new WP_Automatic_Updater;
 		if ( wp_http_supports( 'ssl' ) && $upgrader->should_update( 'core', $updates[0], ABSPATH ) ) {
 			echo '<div class="updated inline"><p>';
@@ -438,8 +436,6 @@
 function do_core_upgrade( $reinstall = false ) {
 	global $wp_filesystem;
 
-	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
-
 	if ( $reinstall )
 		$url = 'update-core.php?action=do-core-reinstall';
 	else
@@ -710,7 +706,6 @@
 	check_admin_referer( 'upgrade-translations' );
 
 	require_once( ABSPATH . 'wp-admin/admin-header.php' );
-	include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
 
 	$url = 'update-core.php?action=do-translation-upgrade';
 	$nonce = 'upgrade-translations';
Index: src/wp-admin/update.php
===================================================================
--- src/wp-admin/update.php	(revision 38395)
+++ src/wp-admin/update.php	(working copy)
@@ -12,8 +12,6 @@
 /** WordPress Administration Bootstrap */
 require_once( dirname( __FILE__ ) . '/admin.php' );
 
-include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' );
-
 if ( isset($_GET['action']) ) {
 	$plugin = isset($_REQUEST['plugin']) ? trim($_REQUEST['plugin']) : '';
 	$theme = isset($_REQUEST['theme']) ? urldecode($_REQUEST['theme']) : '';
@@ -218,8 +216,6 @@
 		if ( ! current_user_can('install_themes') )
 			wp_die( __( 'Sorry, you are not allowed to install themes on this site.' ) );
 
-		include_once( ABSPATH . 'wp-admin/includes/class-wp-upgrader.php' ); //for themes_api..
-
 		check_admin_referer( 'install-theme_' . $theme );
 		$api = themes_api('theme_information', array('slug' => $theme, 'fields' => array('sections' => false, 'tags' => false) ) ); //Save on a bit of bandwidth.
 
Index: src/wp-includes/admin-bar.php
===================================================================
--- src/wp-includes/admin-bar.php	(revision 38395)
+++ src/wp-includes/admin-bar.php	(working copy)
@@ -23,12 +23,10 @@
 function _wp_admin_bar_init() {
 	global $wp_admin_bar;
 
-	if ( ! is_admin_bar_showing() )
+	if ( ! is_admin_bar_showing() ) {
 		return false;
+	}
 
-	/* Load the admin bar class code ready for instantiation */
-	require_once( ABSPATH . WPINC . '/class-wp-admin-bar.php' );
-
 	/* Instantiate the admin bar */
 
 	/**
@@ -39,11 +37,11 @@
 	 * @param string $wp_admin_bar_class Admin bar class to use. Default 'WP_Admin_Bar'.
 	 */
 	$admin_bar_class = apply_filters( 'wp_admin_bar_class', 'WP_Admin_Bar' );
-	if ( class_exists( $admin_bar_class ) )
+	if ( class_exists( $admin_bar_class ) ) {
 		$wp_admin_bar = new $admin_bar_class;
-	else
+	} else {
 		return false;
-
+	}
 	$wp_admin_bar->initialize();
 	$wp_admin_bar->add_menus();
 
@@ -294,10 +292,10 @@
 	}
 
 	if ( is_network_admin() ) {
-		/* translators: %s: site name */ 
+		/* translators: %s: site name */
 		$blogname = sprintf( __( 'Network Admin: %s' ), esc_html( get_current_site()->site_name ) );
 	} elseif ( is_user_admin() ) {
-		/* translators: %s: site name */ 
+		/* translators: %s: site name */
 		$blogname = sprintf( __( 'User Dashboard: %s' ), esc_html( get_current_site()->site_name ) );
 	}
 
Index: src/wp-includes/class-IXR.php
===================================================================
--- src/wp-includes/class-IXR.php	(revision 38395)
+++ src/wp-includes/class-IXR.php	(working copy)
@@ -38,23 +38,3 @@
  * @link       http://scripts.incutio.com/xmlrpc/ Site/manual
  * @license    http://www.opensource.org/licenses/bsd-license.php BSD
  */
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-value.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-message.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-server.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-request.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-client.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-error.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-date.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-base64.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-introspectionserver.php' );
-
-require_once( ABSPATH . WPINC . '/IXR/class-IXR-clientmulticall.php' );
\ No newline at end of file
Index: src/wp-includes/class-http.php
===================================================================
--- src/wp-includes/class-http.php	(revision 38395)
+++ src/wp-includes/class-http.php	(working copy)
@@ -7,7 +7,7 @@
  * @since 2.7.0
  */
 
-if ( ! class_exists( 'Requests' ) ) {
+if ( ! class_exists( 'Requests', false ) ) {
 	require( ABSPATH . WPINC . '/class-requests.php' );
 
 	Requests::register_autoloader();
Index: src/wp-includes/class-phpmailer.php
===================================================================
--- src/wp-includes/class-phpmailer.php	(revision 38395)
+++ src/wp-includes/class-phpmailer.php	(working copy)
@@ -1385,7 +1385,6 @@
     public function getSMTPInstance()
     {
         if (!is_object($this->smtp)) {
-        	require_once( 'class-smtp.php' );
             $this->smtp = new SMTP;
         }
         return $this->smtp;
Index: src/wp-includes/class-wp-customize-control.php
===================================================================
--- src/wp-includes/class-wp-customize-control.php	(revision 38395)
+++ src/wp-includes/class-wp-customize-control.php	(working copy)
@@ -598,54 +598,3 @@
 	protected function content_template() {}
 
 }
-
-/** WP_Customize_Color_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-color-control.php' );
-
-/** WP_Customize_Media_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-media-control.php' );
-
-/** WP_Customize_Upload_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-upload-control.php' );
-
-/** WP_Customize_Image_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-image-control.php' );
-
-/** WP_Customize_Background_Image_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-background-image-control.php' );
-
-/** WP_Customize_Cropped_Image_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-cropped-image-control.php' );
-
-/** WP_Customize_Site_Icon_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-site-icon-control.php' );
-
-/** WP_Customize_Header_Image_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-header-image-control.php' );
-
-/** WP_Customize_Theme_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-theme-control.php' );
-
-/** WP_Widget_Area_Customize_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-widget-area-customize-control.php' );
-
-/** WP_Widget_Form_Customize_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-widget-form-customize-control.php' );
-
-/** WP_Customize_Nav_Menu_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-control.php' );
-
-/** WP_Customize_Nav_Menu_Item_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-item-control.php' );
-
-/** WP_Customize_Nav_Menu_Location_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-location-control.php' );
-
-/** WP_Customize_Nav_Menu_Name_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-name-control.php' );
-
-/** WP_Customize_Nav_Menu_Auto_Add_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-auto-add-control.php' );
-
-/** WP_Customize_New_Menu_Control class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-new-menu-control.php' );
Index: src/wp-includes/class-wp-customize-manager.php
===================================================================
--- src/wp-includes/class-wp-customize-manager.php	(revision 38395)
+++ src/wp-includes/class-wp-customize-manager.php	(working copy)
@@ -205,42 +205,6 @@
 	 * @since 3.4.0
 	 */
 	public function __construct() {
-		require_once( ABSPATH . WPINC . '/class-wp-customize-setting.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-customize-panel.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-customize-section.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-customize-control.php' );
-
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-color-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-media-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-upload-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-image-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-background-image-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-cropped-image-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-site-icon-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-header-image-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-theme-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-widget-area-customize-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-widget-form-customize-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-item-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-location-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-name-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-auto-add-control.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-new-menu-control.php' );
-
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menus-panel.php' );
-
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-themes-section.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-sidebar-section.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-section.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-new-menu-section.php' );
-
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-filter-setting.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-header-image-setting.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-background-image-setting.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-item-setting.php' );
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-setting.php' );
-
 		/**
 		 * Filters the core Customizer components to load.
 		 *
@@ -258,16 +222,13 @@
 		 */
 		$components = apply_filters( 'customize_loaded_components', $this->components, $this );
 
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-selective-refresh.php' );
 		$this->selective_refresh = new WP_Customize_Selective_Refresh( $this );
 
 		if ( in_array( 'widgets', $components, true ) ) {
-			require_once( ABSPATH . WPINC . '/class-wp-customize-widgets.php' );
 			$this->widgets = new WP_Customize_Widgets( $this );
 		}
 
 		if ( in_array( 'nav_menus', $components, true ) ) {
-			require_once( ABSPATH . WPINC . '/class-wp-customize-nav-menus.php' );
 			$this->nav_menus = new WP_Customize_Nav_Menus( $this );
 		}
 
Index: src/wp-includes/class-wp-customize-panel.php
===================================================================
--- src/wp-includes/class-wp-customize-panel.php	(revision 38395)
+++ src/wp-includes/class-wp-customize-panel.php	(working copy)
@@ -384,6 +384,3 @@
 		<?php
 	}
 }
-
-/** WP_Customize_Nav_Menus_Panel class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menus-panel.php' );
Index: src/wp-includes/class-wp-customize-section.php
===================================================================
--- src/wp-includes/class-wp-customize-section.php	(revision 38395)
+++ src/wp-includes/class-wp-customize-section.php	(working copy)
@@ -373,15 +373,3 @@
 		<?php
 	}
 }
-
-/** WP_Customize_Themes_Section class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-themes-section.php' );
-
-/** WP_Customize_Sidebar_Section class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-sidebar-section.php' );
-
-/** WP_Customize_Nav_Menu_Section class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-section.php' );
-
-/** WP_Customize_New_Menu_Section class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-new-menu-section.php' );
Index: src/wp-includes/class-wp-customize-setting.php
===================================================================
--- src/wp-includes/class-wp-customize-setting.php	(revision 38395)
+++ src/wp-includes/class-wp-customize-setting.php	(working copy)
@@ -893,18 +893,3 @@
 		return isset( $result );
 	}
 }
-
-/** WP_Customize_Filter_Setting class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-filter-setting.php' );
-
-/** WP_Customize_Header_Image_Setting class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-header-image-setting.php' );
-
-/** WP_Customize_Background_Image_Setting class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-background-image-setting.php' );
-
-/** WP_Customize_Nav_Menu_Item_Setting class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-item-setting.php' );
-
-/** WP_Customize_Nav_Menu_Setting class */
-require_once( ABSPATH . WPINC . '/customize/class-wp-customize-nav-menu-setting.php' );
Index: src/wp-includes/comment.php
===================================================================
--- src/wp-includes/comment.php	(revision 38395)
+++ src/wp-includes/comment.php	(working copy)
@@ -2369,8 +2369,6 @@
  */
 function pingback($content, $post_ID) {
 	global $wp_version;
-	include_once(ABSPATH . WPINC . '/class-IXR.php');
-	include_once(ABSPATH . WPINC . '/class-wp-http-ixr-client.php');
 
 	// original code by Mort (http://mort.mine.nu:8080)
 	$post_links = array();
@@ -2513,8 +2511,6 @@
  */
 function weblog_ping($server = '', $path = '') {
 	global $wp_version;
-	include_once(ABSPATH . WPINC . '/class-IXR.php');
-	include_once(ABSPATH . WPINC . '/class-wp-http-ixr-client.php');
 
 	// using a timeout of 3 seconds should be enough to cover slow servers
 	$client = new WP_HTTP_IXR_Client($server, ((!strlen(trim($path)) || ('/' == $path)) ? false : $path));
Index: src/wp-includes/customize/class-wp-customize-selective-refresh.php
===================================================================
--- src/wp-includes/customize/class-wp-customize-selective-refresh.php	(revision 38395)
+++ src/wp-includes/customize/class-wp-customize-selective-refresh.php	(working copy)
@@ -67,7 +67,6 @@
 	 */
 	public function __construct( WP_Customize_Manager $manager ) {
 		$this->manager = $manager;
-		require_once( ABSPATH . WPINC . '/customize/class-wp-customize-partial.php' );
 
 		add_action( 'customize_preview_init', array( $this, 'init_preview' ) );
 	}
Index: src/wp-includes/feed.php
===================================================================
--- src/wp-includes/feed.php	(revision 38395)
+++ src/wp-includes/feed.php	(working copy)
@@ -666,10 +666,6 @@
 	if ( ! class_exists( 'SimplePie', false ) ) {
 		require_once( ABSPATH . WPINC . '/class-simplepie.php' );
 	}
-	require_once( ABSPATH . WPINC . '/class-wp-feed-cache.php' );
-	require_once( ABSPATH . WPINC . '/class-wp-feed-cache-transient.php' );
-	require_once( ABSPATH . WPINC . '/class-wp-simplepie-file.php' );
-	require_once( ABSPATH . WPINC . '/class-wp-simplepie-sanitize-kses.php' );
 
 	$feed = new SimplePie();
 
Index: src/wp-includes/functions.php
===================================================================
--- src/wp-includes/functions.php	(revision 38395)
+++ src/wp-includes/functions.php	(working copy)
@@ -561,8 +561,6 @@
 	global $wpdb;
 
 	//TODO: Tidy this ghetto code up and make the debug code optional
-	include_once( ABSPATH . WPINC . '/class-IXR.php' );
-
 	$post_links = array();
 
 	$pung = get_enclosed( $post_ID );
Index: src/wp-includes/general-template.php
===================================================================
--- src/wp-includes/general-template.php	(revision 38395)
+++ src/wp-includes/general-template.php	(working copy)
@@ -2980,9 +2980,6 @@
  * @param array  $settings  See _WP_Editors::editor().
  */
 function wp_editor( $content, $editor_id, $settings = array() ) {
-	if ( ! class_exists( '_WP_Editors', false ) )
-		require( ABSPATH . WPINC . '/class-wp-editor.php' );
-
 	_WP_Editors::editor($content, $editor_id, $settings);
 }
 
Index: src/wp-includes/link-template.php
===================================================================
--- src/wp-includes/link-template.php	(revision 38397)
+++ src/wp-includes/link-template.php	(working copy)
@@ -2909,7 +2909,6 @@
 function get_shortcut_link() {
 	global $is_IE, $wp_version;
 
-	include_once( ABSPATH . 'wp-admin/includes/class-wp-press-this.php' );
 	$GLOBALS['wp_press_this'] = new WP_Press_This();
 	$bookmarklet_version = $GLOBALS['wp_press_this']->version;
 	$link = '';
Index: src/wp-includes/load.php
===================================================================
--- src/wp-includes/load.php	(revision 38395)
+++ src/wp-includes/load.php	(working copy)
@@ -394,12 +394,12 @@
 function require_wp_db() {
 	global $wpdb;
 
-	require_once( ABSPATH . WPINC . '/wp-db.php' );
 	if ( file_exists( WP_CONTENT_DIR . '/db.php' ) )
 		require_once( WP_CONTENT_DIR . '/db.php' );
 
-	if ( isset( $wpdb ) )
+	if ( isset( $wpdb ) ) {
 		return;
+	}
 
 	$wpdb = new wpdb( DB_USER, DB_PASSWORD, DB_NAME, DB_HOST );
 }
Index: src/wp-includes/media.php
===================================================================
--- src/wp-includes/media.php	(revision 38395)
+++ src/wp-includes/media.php	(working copy)
@@ -2909,10 +2909,6 @@
  *                     editor claims to support the request.
  */
 function _wp_image_editor_choose( $args = array() ) {
-	require_once ABSPATH . WPINC . '/class-wp-image-editor.php';
-	require_once ABSPATH . WPINC . '/class-wp-image-editor-gd.php';
-	require_once ABSPATH . WPINC . '/class-wp-image-editor-imagick.php';
-
 	/**
 	 * Filters the list of image editing library classes.
 	 *
Index: src/wp-includes/ms-settings.php
===================================================================
--- src/wp-includes/ms-settings.php	(revision 38395)
+++ src/wp-includes/ms-settings.php	(working copy)
@@ -22,12 +22,6 @@
  */
 global $current_site, $current_blog;
 
-/** WP_Network class */
-require_once( ABSPATH . WPINC . '/class-wp-network.php' );
-
-/** WP_Site class */
-require_once( ABSPATH . WPINC . '/class-wp-site.php' );
-
 /** Multisite loader */
 require_once( ABSPATH . WPINC . '/ms-load.php' );
 
Index: src/wp-includes/nav-menu-template.php
===================================================================
--- src/wp-includes/nav-menu-template.php	(revision 38395)
+++ src/wp-includes/nav-menu-template.php	(working copy)
@@ -7,9 +7,6 @@
  * @since 3.0.0
  */
 
-/** Walker_Nav_Menu class */
-require_once ABSPATH . WPINC . '/class-walker-nav-menu.php';
-
 /**
  * Displays a navigation menu.
  *
Index: src/wp-includes/pluggable.php
===================================================================
--- src/wp-includes/pluggable.php	(revision 38395)
+++ src/wp-includes/pluggable.php	(working copy)
@@ -211,7 +211,6 @@
 	// (Re)create it, if it's gone missing
 	if ( ! ( $phpmailer instanceof PHPMailer ) ) {
 		require_once ABSPATH . WPINC . '/class-phpmailer.php';
-		require_once ABSPATH . WPINC . '/class-smtp.php';
 		$phpmailer = new PHPMailer( true );
 	}
 
Index: src/wp-includes/script-loader.php
===================================================================
--- src/wp-includes/script-loader.php	(revision 38395)
+++ src/wp-includes/script-loader.php	(working copy)
@@ -16,21 +16,9 @@
  * @package WordPress
  */
 
-/** WordPress Dependency Class */
-require( ABSPATH . WPINC . '/class-wp-dependency.php' );
-
-/** WordPress Dependencies Class */
-require( ABSPATH . WPINC . '/class.wp-dependencies.php' );
-
-/** WordPress Scripts Class */
-require( ABSPATH . WPINC . '/class.wp-scripts.php' );
-
 /** WordPress Scripts Functions */
 require( ABSPATH . WPINC . '/functions.wp-scripts.php' );
 
-/** WordPress Styles Class */
-require( ABSPATH . WPINC . '/class.wp-styles.php' );
-
 /** WordPress Styles Functions */
 require( ABSPATH . WPINC . '/functions.wp-styles.php' );
 
Index: src/wp-includes/theme.php
===================================================================
--- src/wp-includes/theme.php	(revision 38395)
+++ src/wp-includes/theme.php	(working copy)
@@ -1756,7 +1756,6 @@
 			add_action( 'wp_head', $args[0]['wp-head-callback'] );
 
 		if ( is_admin() ) {
-			require_once( ABSPATH . 'wp-admin/custom-header.php' );
 			$custom_image_header = new Custom_Image_Header( $args[0]['admin-head-callback'], $args[0]['admin-preview-callback'] );
 		}
 	}
@@ -1769,7 +1768,6 @@
 		add_action( 'wp_head', $args[0]['wp-head-callback'] );
 
 		if ( is_admin() ) {
-			require_once( ABSPATH . 'wp-admin/custom-background.php' );
 			$custom_background = new Custom_Background( $args[0]['admin-head-callback'], $args[0]['admin-preview-callback'] );
 		}
 	}
@@ -2082,7 +2080,6 @@
 		return;
 	}
 
-	require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
 	$GLOBALS['wp_customize'] = new WP_Customize_Manager();
 }
 
Index: src/wp-includes/update.php
===================================================================
--- src/wp-includes/update.php	(revision 38395)
+++ src/wp-includes/update.php	(working copy)
@@ -505,7 +505,6 @@
  */
 function wp_maybe_auto_update() {
 	include_once( ABSPATH . '/wp-admin/includes/admin.php' );
-	include_once( ABSPATH . '/wp-admin/includes/class-wp-upgrader.php' );
 
 	$upgrader = new WP_Automatic_Updater;
 	$upgrader->run();
Index: src/wp-includes/wp-diff.php
===================================================================
--- src/wp-includes/wp-diff.php	(revision 38395)
+++ src/wp-includes/wp-diff.php	(working copy)
@@ -16,6 +16,3 @@
 	/** Text_Diff_Renderer_inline class */
 	require( ABSPATH . WPINC . '/Text/Diff/Renderer/inline.php' );
 }
-
-require( ABSPATH . WPINC . '/class-wp-text-diff-renderer-table.php' );
-require( ABSPATH . WPINC . '/class-wp-text-diff-renderer-inline.php' );
\ No newline at end of file
Index: src/wp-mail.php
===================================================================
--- src/wp-mail.php	(revision 38395)
+++ src/wp-mail.php	(working copy)
@@ -21,9 +21,6 @@
  */
 do_action( 'wp-mail.php' );
 
-/** Get the POP3 class with which to access the mailbox. */
-require_once( ABSPATH . WPINC . '/class-pop3.php' );
-
 /** Only check at this interval for new messages. */
 if ( !defined('WP_MAIL_INTERVAL') )
 	define('WP_MAIL_INTERVAL', 300); // 5 minutes
Index: src/wp-settings.php
===================================================================
--- src/wp-settings.php	(revision 38395)
+++ src/wp-settings.php	(working copy)
@@ -17,6 +17,8 @@
  */
 define( 'WPINC', 'wp-includes' );
 
+require_once( ABSPATH . 'wp-vendor/autoload_52.php' );
+
 // Include files required for initialization.
 require( ABSPATH . WPINC . '/load.php' );
 require( ABSPATH . WPINC . '/default-constants.php' );
@@ -93,11 +95,7 @@
 require( ABSPATH . WPINC . '/compat.php' );
 require( ABSPATH . WPINC . '/option.php' );
 require( ABSPATH . WPINC . '/functions.php' );
-require( ABSPATH . WPINC . '/class-wp-matchesmapregex.php' );
-require( ABSPATH . WPINC . '/class-wp.php' );
-require( ABSPATH . WPINC . '/class-wp-error.php' );
 require( ABSPATH . WPINC . '/pomo/mo.php' );
-require( ABSPATH . WPINC . '/class-phpass.php' );
 
 // Include the wpdb class and, if present, a db.php database drop-in.
 global $wpdb;
@@ -115,8 +113,6 @@
 
 // Initialize multisite if enabled.
 if ( is_multisite() ) {
-	require( ABSPATH . WPINC . '/class-wp-site-query.php' );
-	require( ABSPATH . WPINC . '/class-wp-network-query.php' );
 	require( ABSPATH . WPINC . '/ms-blogs.php' );
 	require( ABSPATH . WPINC . '/ms-settings.php' );
 } elseif ( ! defined( 'MULTISITE' ) ) {
@@ -136,49 +132,26 @@
 wp_not_installed();
 
 // Load most of WordPress.
-require( ABSPATH . WPINC . '/class-wp-walker.php' );
-require( ABSPATH . WPINC . '/class-wp-ajax-response.php' );
 require( ABSPATH . WPINC . '/formatting.php' );
 require( ABSPATH . WPINC . '/capabilities.php' );
-require( ABSPATH . WPINC . '/class-wp-roles.php' );
-require( ABSPATH . WPINC . '/class-wp-role.php' );
-require( ABSPATH . WPINC . '/class-wp-user.php' );
-require( ABSPATH . WPINC . '/class-wp-query.php' );
 require( ABSPATH . WPINC . '/query.php' );
-require( ABSPATH . WPINC . '/date.php' );
 require( ABSPATH . WPINC . '/theme.php' );
-require( ABSPATH . WPINC . '/class-wp-theme.php' );
 require( ABSPATH . WPINC . '/template.php' );
 require( ABSPATH . WPINC . '/user.php' );
-require( ABSPATH . WPINC . '/class-wp-user-query.php' );
-require( ABSPATH . WPINC . '/class-wp-session-tokens.php' );
-require( ABSPATH . WPINC . '/class-wp-user-meta-session-tokens.php' );
 require( ABSPATH . WPINC . '/meta.php' );
-require( ABSPATH . WPINC . '/class-wp-meta-query.php' );
-require( ABSPATH . WPINC . '/class-wp-metadata-lazyloader.php' );
 require( ABSPATH . WPINC . '/general-template.php' );
 require( ABSPATH . WPINC . '/link-template.php' );
 require( ABSPATH . WPINC . '/author-template.php' );
 require( ABSPATH . WPINC . '/post.php' );
-require( ABSPATH . WPINC . '/class-walker-page.php' );
-require( ABSPATH . WPINC . '/class-walker-page-dropdown.php' );
-require( ABSPATH . WPINC . '/class-wp-post-type.php' );
-require( ABSPATH . WPINC . '/class-wp-post.php' );
 require( ABSPATH . WPINC . '/post-template.php' );
 require( ABSPATH . WPINC . '/revision.php' );
 require( ABSPATH . WPINC . '/post-formats.php' );
 require( ABSPATH . WPINC . '/post-thumbnail-template.php' );
 require( ABSPATH . WPINC . '/category.php' );
-require( ABSPATH . WPINC . '/class-walker-category.php' );
-require( ABSPATH . WPINC . '/class-walker-category-dropdown.php' );
 require( ABSPATH . WPINC . '/category-template.php' );
 require( ABSPATH . WPINC . '/comment.php' );
-require( ABSPATH . WPINC . '/class-wp-comment.php' );
-require( ABSPATH . WPINC . '/class-wp-comment-query.php' );
-require( ABSPATH . WPINC . '/class-walker-comment.php' );
 require( ABSPATH . WPINC . '/comment-template.php' );
 require( ABSPATH . WPINC . '/rewrite.php' );
-require( ABSPATH . WPINC . '/class-wp-rewrite.php' );
 require( ABSPATH . WPINC . '/feed.php' );
 require( ABSPATH . WPINC . '/bookmark.php' );
 require( ABSPATH . WPINC . '/bookmark-template.php' );
@@ -187,37 +160,17 @@
 require( ABSPATH . WPINC . '/deprecated.php' );
 require( ABSPATH . WPINC . '/script-loader.php' );
 require( ABSPATH . WPINC . '/taxonomy.php' );
-require( ABSPATH . WPINC . '/class-wp-term.php' );
-require( ABSPATH . WPINC . '/class-wp-term-query.php' );
-require( ABSPATH . WPINC . '/class-wp-tax-query.php' );
 require( ABSPATH . WPINC . '/update.php' );
 require( ABSPATH . WPINC . '/canonical.php' );
 require( ABSPATH . WPINC . '/shortcodes.php' );
 require( ABSPATH . WPINC . '/embed.php' );
-require( ABSPATH . WPINC . '/class-wp-embed.php' );
-require( ABSPATH . WPINC . '/class-oembed.php' );
-require( ABSPATH . WPINC . '/class-wp-oembed-controller.php' );
 require( ABSPATH . WPINC . '/media.php' );
 require( ABSPATH . WPINC . '/http.php' );
-require( ABSPATH . WPINC . '/class-http.php' );
-require( ABSPATH . WPINC . '/class-wp-http-streams.php' );
-require( ABSPATH . WPINC . '/class-wp-http-curl.php' );
-require( ABSPATH . WPINC . '/class-wp-http-proxy.php' );
-require( ABSPATH . WPINC . '/class-wp-http-cookie.php' );
-require( ABSPATH . WPINC . '/class-wp-http-encoding.php' );
-require( ABSPATH . WPINC . '/class-wp-http-response.php' );
-require( ABSPATH . WPINC . '/class-wp-http-requests-response.php' );
 require( ABSPATH . WPINC . '/widgets.php' );
-require( ABSPATH . WPINC . '/class-wp-widget.php' );
-require( ABSPATH . WPINC . '/class-wp-widget-factory.php' );
 require( ABSPATH . WPINC . '/nav-menu.php' );
 require( ABSPATH . WPINC . '/nav-menu-template.php' );
 require( ABSPATH . WPINC . '/admin-bar.php' );
 require( ABSPATH . WPINC . '/rest-api.php' );
-require( ABSPATH . WPINC . '/rest-api/class-wp-rest-server.php' );
-require( ABSPATH . WPINC . '/rest-api/class-wp-rest-response.php' );
-require( ABSPATH . WPINC . '/rest-api/class-wp-rest-request.php' );
-require( ABSPATH . WPINC . '/class-wp-locale.php' );
 
 $GLOBALS['wp_embed'] = new WP_Embed();
 
Index: src/xmlrpc.php
===================================================================
--- src/xmlrpc.php	(revision 38395)
+++ src/xmlrpc.php	(working copy)
@@ -59,9 +59,7 @@
 exit;
 }
 
-include_once(ABSPATH . 'wp-admin/includes/admin.php');
-include_once(ABSPATH . WPINC . '/class-IXR.php');
-include_once(ABSPATH . WPINC . '/class-wp-xmlrpc-server.php');
+include_once( ABSPATH . 'wp-admin/includes/admin.php' );
 
 /**
  * Posts submitted via the XML-RPC interface get that title
Index: tests/phpunit/includes/install.php
===================================================================
--- tests/phpunit/includes/install.php	(revision 38395)
+++ tests/phpunit/includes/install.php	(working copy)
@@ -20,7 +20,6 @@
 require_once ABSPATH . '/wp-settings.php';
 
 require_once ABSPATH . '/wp-admin/includes/upgrade.php';
-require_once ABSPATH . '/wp-includes/wp-db.php';
 
 // Override the PHPMailer
 global $phpmailer;
Index: tests/phpunit/includes/testcase-xmlrpc.php
===================================================================
--- tests/phpunit/includes/testcase-xmlrpc.php	(revision 38395)
+++ tests/phpunit/includes/testcase-xmlrpc.php	(working copy)
@@ -1,7 +1,5 @@
 <?php
-include_once(ABSPATH . 'wp-admin/includes/admin.php');
-include_once(ABSPATH . WPINC . '/class-IXR.php');
-include_once(ABSPATH . WPINC . '/class-wp-xmlrpc-server.php');
+include_once( ABSPATH . 'wp-admin/includes/admin.php' );
 
 class WP_XMLRPC_UnitTestCase extends WP_UnitTestCase {
 	protected $myxmlrpcserver;
Index: tests/phpunit/tests/adminbar.php
===================================================================
--- tests/phpunit/tests/adminbar.php	(revision 38395)
+++ tests/phpunit/tests/adminbar.php	(working copy)
@@ -14,12 +14,6 @@
 
 	protected static $user_ids = array();
 
-	public static function setUpBeforeClass() {
-		require_once( ABSPATH . WPINC . '/class-wp-admin-bar.php' );
-
-		parent::setUpBeforeClass();
-	}
-
 	public static function wpSetUpBeforeClass( $factory ) {
 		self::$user_ids[] = self::$editor_id = $factory->user->create( array( 'role' => 'editor' ) );
 		self::$user_ids[] = self::$admin_id = $factory->user->create( array( 'role' => 'administrator' ) );
Index: tests/phpunit/tests/ajax/CustomizeMenus.php
===================================================================
--- tests/phpunit/tests/ajax/CustomizeMenus.php	(revision 38395)
+++ tests/phpunit/tests/ajax/CustomizeMenus.php	(working copy)
@@ -21,7 +21,7 @@
 	 */
 	public function setUp() {
 		parent::setUp();
-		require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
+
 		wp_set_current_user( self::factory()->user->create( array( 'role' => 'administrator' ) ) );
 		global $wp_customize;
 		$this->wp_customize = new WP_Customize_Manager();
Index: tests/phpunit/tests/auth.php
===================================================================
--- tests/phpunit/tests/auth.php	(revision 38395)
+++ tests/phpunit/tests/auth.php	(working copy)
@@ -22,7 +22,6 @@
 
 		self::$user_id = self::$_user->ID;
 
-		require_once( ABSPATH . WPINC . '/class-phpass.php' );
 		self::$wp_hasher = new PasswordHash( 8, true );
 	}
 
Index: tests/phpunit/tests/comment-submission.php
===================================================================
--- tests/phpunit/tests/comment-submission.php	(revision 38395)
+++ tests/phpunit/tests/comment-submission.php	(working copy)
@@ -7,11 +7,6 @@
 
 	protected $preprocess_comment_data = array();
 
-	function setUp() {
-		parent::setUp();
-		require_once ABSPATH . WPINC . '/class-phpass.php';
-	}
-
 	public function test_submitting_comment_to_invalid_post_returns_error() {
 		$error = 'comment_id_not_found';
 
Index: tests/phpunit/tests/compat.php
===================================================================
--- tests/phpunit/tests/compat.php	(revision 38395)
+++ tests/phpunit/tests/compat.php	(working copy)
@@ -86,7 +86,7 @@
 		$this->assertEquals( 'DEF', _mb_substr($string_ascii, 3) );
 		$this->assertEquals( 'DEF', _mb_substr($string_ascii, 3, 5, 'ISO-8859-1') );
 
-		// specific latin-1 as that is the default the core php test opporates under	
+		// specific latin-1 as that is the default the core php test opporates under
 		$this->assertEquals( 'peacrOiqng==' , base64_encode( _mb_substr($string_mb, 2, 7, 'latin-1' ) ) );
 		$this->assertEquals( '6Kqe44OG44Kt44K544OI44Gn44GZ', base64_encode( _mb_substr($string_mb, 2, 7, 'utf-8') ) );
 
@@ -98,7 +98,7 @@
 		$heredoc = <<<EOT
 hello world
 EOT;
-		$inputs = array( 
+		$inputs = array(
 		/*1*/  0,
 			   1,
 			   12345,
@@ -188,7 +188,7 @@
 	}
 }
 
-/* used in test_mb_substr_phpcore */ 
+/* used in test_mb_substr_phpcore */
 class classA {
 	public function __toString() {
 		return "Class A object";
Index: tests/phpunit/tests/customize/control.php
===================================================================
--- tests/phpunit/tests/customize/control.php	(revision 38395)
+++ tests/phpunit/tests/customize/control.php	(working copy)
@@ -26,7 +26,7 @@
 	 */
 	function setUp() {
 		parent::setUp();
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
+
 		// @codingStandardsIgnoreStart
 		$GLOBALS['wp_customize'] = new WP_Customize_Manager();
 		// @codingStandardsIgnoreEnd
Index: tests/phpunit/tests/customize/manager.php
===================================================================
--- tests/phpunit/tests/customize/manager.php	(revision 38395)
+++ tests/phpunit/tests/customize/manager.php	(working copy)
@@ -31,7 +31,7 @@
 	 */
 	function setUp() {
 		parent::setUp();
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
+
 		$this->manager = $this->instantiate();
 		$this->undefined = new stdClass();
 	}
@@ -977,8 +977,6 @@
 	}
 }
 
-require_once ABSPATH . WPINC . '/class-wp-customize-setting.php';
-
 /**
  * Class Test_Dynamic_Customize_Setting
  *
Index: tests/phpunit/tests/customize/nav-menu-item-setting.php
===================================================================
--- tests/phpunit/tests/customize/nav-menu-item-setting.php	(revision 38395)
+++ tests/phpunit/tests/customize/nav-menu-item-setting.php	(working copy)
@@ -20,7 +20,7 @@
 	 */
 	function setUp() {
 		parent::setUp();
-		require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
+
 		wp_set_current_user( self::factory()->user->create( array( 'role' => 'administrator' ) ) );
 
 		global $wp_customize;
Index: tests/phpunit/tests/customize/nav-menu-setting.php
===================================================================
--- tests/phpunit/tests/customize/nav-menu-setting.php	(revision 38395)
+++ tests/phpunit/tests/customize/nav-menu-setting.php	(working copy)
@@ -21,7 +21,7 @@
 	 */
 	function setUp() {
 		parent::setUp();
-		require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
+
 		wp_set_current_user( self::factory()->user->create( array( 'role' => 'administrator' ) ) );
 
 		global $wp_customize;
Index: tests/phpunit/tests/customize/nav-menus.php
===================================================================
--- tests/phpunit/tests/customize/nav-menus.php	(revision 38395)
+++ tests/phpunit/tests/customize/nav-menus.php	(working copy)
@@ -21,7 +21,7 @@
 	 */
 	function setUp() {
 		parent::setUp();
-		require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
+
 		wp_set_current_user( self::factory()->user->create( array( 'role' => 'administrator' ) ) );
 		global $wp_customize;
 		$this->wp_customize = new WP_Customize_Manager();
Index: tests/phpunit/tests/customize/panel.php
===================================================================
--- tests/phpunit/tests/customize/panel.php	(revision 38395)
+++ tests/phpunit/tests/customize/panel.php	(working copy)
@@ -14,7 +14,7 @@
 
 	function setUp() {
 		parent::setUp();
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
+
 		$GLOBALS['wp_customize'] = new WP_Customize_Manager();
 		$this->manager = $GLOBALS['wp_customize'];
 		$this->undefined = new stdClass();
@@ -211,7 +211,6 @@
 	}
 }
 
-require_once ABSPATH . WPINC . '/class-wp-customize-panel.php';
 class Custom_Panel_Test extends WP_Customize_Panel {
 	public $type = 'titleless';
 
Index: tests/phpunit/tests/customize/partial.php
===================================================================
--- tests/phpunit/tests/customize/partial.php	(revision 38395)
+++ tests/phpunit/tests/customize/partial.php	(working copy)
@@ -31,7 +31,7 @@
 	 */
 	function setUp() {
 		parent::setUp();
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
+
 		// @codingStandardsIgnoreStart
 		$GLOBALS['wp_customize'] = new WP_Customize_Manager();
 		// @codingStandardsIgnoreEnd
Index: tests/phpunit/tests/customize/section.php
===================================================================
--- tests/phpunit/tests/customize/section.php	(revision 38395)
+++ tests/phpunit/tests/customize/section.php	(working copy)
@@ -26,7 +26,7 @@
 
 	function setUp() {
 		parent::setUp();
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
+
 		$GLOBALS['wp_customize'] = new WP_Customize_Manager();
 		$this->manager = $GLOBALS['wp_customize'];
 		$this->undefined = new stdClass();
@@ -224,7 +224,6 @@
 	}
 }
 
-require_once ABSPATH . WPINC . '/class-wp-customize-section.php';
 class Custom_Section_Test extends WP_Customize_Section {
 	public $type = 'titleless';
 
Index: tests/phpunit/tests/customize/selective-refresh-ajax.php
===================================================================
--- tests/phpunit/tests/customize/selective-refresh-ajax.php	(revision 38395)
+++ tests/phpunit/tests/customize/selective-refresh-ajax.php	(working copy)
@@ -43,7 +43,6 @@
 		}
 		add_filter( 'wp_die_ajax_handler', array( $this, 'get_wp_die_handler' ), 1, 1 );
 
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
 		// @codingStandardsIgnoreStart
 		$GLOBALS['wp_customize'] = new WP_Customize_Manager();
 		// @codingStandardsIgnoreEnd
Index: tests/phpunit/tests/customize/selective-refresh.php
===================================================================
--- tests/phpunit/tests/customize/selective-refresh.php	(revision 38395)
+++ tests/phpunit/tests/customize/selective-refresh.php	(working copy)
@@ -31,7 +31,7 @@
 	 */
 	function setUp() {
 		parent::setUp();
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
+
 		// @codingStandardsIgnoreStart
 		$GLOBALS['wp_customize'] = new WP_Customize_Manager();
 		// @codingStandardsIgnoreEnd
@@ -256,8 +256,6 @@
 	}
 }
 
-require_once ABSPATH . WPINC . '/customize/class-wp-customize-partial.php';
-
 /**
  * Class Tested_Custom_Partial
  */
Index: tests/phpunit/tests/customize/setting.php
===================================================================
--- tests/phpunit/tests/customize/setting.php	(revision 38395)
+++ tests/phpunit/tests/customize/setting.php	(working copy)
@@ -19,7 +19,7 @@
 
 	function setUp() {
 		parent::setUp();
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
+
 		$GLOBALS['wp_customize'] = new WP_Customize_Manager();
 		$this->manager = $GLOBALS['wp_customize'];
 		$this->undefined = new stdClass();
Index: tests/phpunit/tests/customize/widgets.php
===================================================================
--- tests/phpunit/tests/customize/widgets.php	(revision 38395)
+++ tests/phpunit/tests/customize/widgets.php	(working copy)
@@ -22,7 +22,6 @@
 
 	function setUp() {
 		parent::setUp();
-		require_once( ABSPATH . WPINC . '/class-wp-customize-manager.php' );
 
 		add_theme_support( 'customize-selective-refresh-widgets' );
 		$user_id = self::factory()->user->create( array( 'role' => 'administrator' ) );
Index: tests/phpunit/tests/general/template.php
===================================================================
--- tests/phpunit/tests/general/template.php	(revision 38395)
+++ tests/phpunit/tests/general/template.php	(working copy)
@@ -6,8 +6,6 @@
  * @group site_icon
  */
 
-require_once( ABSPATH . 'wp-admin/includes/class-wp-site-icon.php' );
-
 class Tests_General_Template extends WP_UnitTestCase {
 	protected $wp_site_icon;
 	public $site_icon_id;
Index: tests/phpunit/tests/image/editor.php
===================================================================
--- tests/phpunit/tests/image/editor.php	(revision 38395)
+++ tests/phpunit/tests/image/editor.php	(working copy)
@@ -14,8 +14,6 @@
 	 * Setup test fixture
 	 */
 	public function setup() {
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor.php' );
-
 		include_once( DIR_TESTDATA . '/../includes/mock-image-editor.php' );
 
 		parent::setUp();
Index: tests/phpunit/tests/image/editor_gd.php
===================================================================
--- tests/phpunit/tests/image/editor_gd.php	(revision 38395)
+++ tests/phpunit/tests/image/editor_gd.php	(working copy)
@@ -12,13 +12,6 @@
 
 	public $editor_engine = 'WP_Image_Editor_GD';
 
-	public function setUp() {
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor-gd.php' );
-
-		parent::setUp();
-	}
-
 	public function tearDown() {
 		$folder = DIR_TESTDATA . '/images/waffles-*.jpg';
 
Index: tests/phpunit/tests/image/editor_imagick.php
===================================================================
--- tests/phpunit/tests/image/editor_imagick.php	(revision 38395)
+++ tests/phpunit/tests/image/editor_imagick.php	(working copy)
@@ -12,13 +12,6 @@
 
 	public $editor_engine = 'WP_Image_Editor_Imagick';
 
-	public function setUp() {
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor-imagick.php' );
-
-		parent::setUp();
-	}
-
 	public function tearDown() {
 		$folder = DIR_TESTDATA . '/images/waffles-*.jpg';
 
Index: tests/phpunit/tests/image/functions.php
===================================================================
--- tests/phpunit/tests/image/functions.php	(revision 38395)
+++ tests/phpunit/tests/image/functions.php	(working copy)
@@ -13,10 +13,6 @@
 	public function setUp() {
 		parent::setUp();
 
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor-gd.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor-imagick.php' );
-
 		include_once( DIR_TESTDATA . '/../includes/mock-image-editor.php' );
 	}
 
Index: tests/phpunit/tests/image/resize_gd.php
===================================================================
--- tests/phpunit/tests/image/resize_gd.php	(revision 38395)
+++ tests/phpunit/tests/image/resize_gd.php	(working copy)
@@ -16,13 +16,6 @@
 	 */
 	public $editor_engine = 'WP_Image_Editor_GD';
 
-	public function setUp() {
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor-gd.php' );
-
-		parent::setUp();
-	}
-
 	/**
 	 * Try resizing a php file (bad image)
 	 * @ticket 6821
Index: tests/phpunit/tests/image/resize_imagick.php
===================================================================
--- tests/phpunit/tests/image/resize_imagick.php	(revision 38395)
+++ tests/phpunit/tests/image/resize_imagick.php	(working copy)
@@ -15,11 +15,4 @@
 	 * @var string
 	 */
 	public $editor_engine = 'WP_Image_Editor_Imagick';
-
-	public function setUp() {
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor.php' );
-		require_once( ABSPATH . WPINC . '/class-wp-image-editor-imagick.php' );
-
-		parent::setUp();
-	}
 }
\ No newline at end of file
Index: tests/phpunit/tests/image/site_icon.php
===================================================================
--- tests/phpunit/tests/image/site_icon.php	(revision 38395)
+++ tests/phpunit/tests/image/site_icon.php	(working copy)
@@ -5,8 +5,6 @@
  * @group site_icon
  */
 
-require_once( ABSPATH . 'wp-admin/includes/class-wp-site-icon.php' );
-
 class Tests_WP_Site_Icon extends WP_UnitTestCase {
 	protected $wp_site_icon;
 
Index: tests/phpunit/tests/menu/walker-nav-menu-edit.php
===================================================================
--- tests/phpunit/tests/menu/walker-nav-menu-edit.php	(revision 38395)
+++ tests/phpunit/tests/menu/walker-nav-menu-edit.php	(working copy)
@@ -12,9 +12,6 @@
 
 		parent::setUp();
 
-		/** Walker_Nav_Menu_Edit class */
-		require_once( ABSPATH . 'wp-admin/includes/class-walker-nav-menu-edit.php' );
-
 		$this->walker = new Walker_Nav_Menu_Edit();
 
 		$this->_wp_nav_menu_max_depth = $_wp_nav_menu_max_depth;
Index: tests/phpunit/tests/oembed/wpOembed.php
===================================================================
--- tests/phpunit/tests/oembed/wpOembed.php	(revision 38395)
+++ tests/phpunit/tests/oembed/wpOembed.php	(working copy)
@@ -14,7 +14,6 @@
 	public function setUp() {
 		parent::setUp();
 
-		require_once ABSPATH . WPINC . '/class-oembed.php';
 		$this->oembed = _wp_oembed_get_object();
 
 		$this->pre_oembed_result_filtered = false;
Index: tests/phpunit/tests/widgets.php
===================================================================
--- tests/phpunit/tests/widgets.php	(revision 38395)
+++ tests/phpunit/tests/widgets.php	(working copy)
@@ -509,7 +509,7 @@
 		$this->assertFalse( $widget->is_preview() );
 
 		wp_set_current_user( self::factory()->user->create( array( 'role' => 'administrator' ) ) );
-		require_once ABSPATH . WPINC . '/class-wp-customize-manager.php';
+
 		$wp_customize = new WP_Customize_Manager();
 		$wp_customize->start_previewing_theme();
 
Index: tests/phpunit/tests/xmlrpc/basic.php
===================================================================
--- tests/phpunit/tests/xmlrpc/basic.php	(revision 38395)
+++ tests/phpunit/tests/xmlrpc/basic.php	(working copy)
@@ -1,8 +1,5 @@
 <?php
-
 require_once ABSPATH . 'wp-admin/includes/admin.php';
-require_once ABSPATH . WPINC . '/class-IXR.php';
-require_once ABSPATH . WPINC . '/class-wp-xmlrpc-server.php';
 
 /**
  * @group xmlrpc
Index: tests/phpunit/tests/xmlrpc/client.php
===================================================================
--- tests/phpunit/tests/xmlrpc/client.php	(revision 38395)
+++ tests/phpunit/tests/xmlrpc/client.php	(working copy)
@@ -1,7 +1,4 @@
 <?php
-require_once ABSPATH . WPINC . '/class-IXR.php';
-require_once ABSPATH . WPINC . '/class-wp-http-ixr-client.php';
-
 /**
  * @group xmlrpc
  */
