+/** WordPress Deprecated Administration API */
+require_once(ABSPATH . 'wp-admin/includes/deprecated.php');
+
+/** WordPress Multi-Site support API */
+if ( is_multisite() ) {
+ require_once(ABSPATH . 'wp-admin/includes/ms.php');
+ require_once(ABSPATH . 'wp-admin/includes/ms-deprecated.php');
+}
+