Ticket #34189: wordpress.patch2

diff -ru wordpress-orig/wp-config-sample.php wordpress/wp-config-sample.php
--- wordpress-orig/wp-config-sample.php 2015-10-07 10:51:47.486271282 +0200
+++ wordpress/wp-config-sample.php      2015-10-07 12:39:33.454227883 +0200
@@ -62,6 +62,10 @@
  *
  * You can have multiple installations in one database if you give each
  * a unique prefix. Only numbers, letters, and underscores please!
+ * 
+ * IF YOU CHANGE THIS FOR AN EXISTING DATABASE, IT IS NOT SUFFICIENT TO
+ * RENAME THE TABLES. YOU WILL ALSO HAVE TO CHANGE THE CONTENTS FOR
+ * SEVERAL ROWS IN SEVERAL TABLES.
  */
 $table_prefix  = 'wp_';