Generic POST handler
|Reported by:||ryan||Owned by:|
Provide admin-post.php as a handler for POST requests made by plugins. admin-post.php handles setup and auth. Plugins pass an "action" argument via POST or GET and admin-post.php issues an "admin_post_$action" action. Functions registered by the plugin for that action will be kicked off. This will obviate the need for plugins to provide their own file for POST handling that has to search for the location of wp-config.php/wp-load.php.