Don't rely on include_path to include files.

Always use dirname() or, once available, ABSPATH.

props ketwaroo, hakre.
fixes #17092.

Built from https://develop.svn.wordpress.org/trunk@25616


git-svn-id: http://core.svn.wordpress.org/trunk@25533 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/media.php

@@ -7,7 +7,7 @@
  */
 
 /** Load WordPress Administration Bootstrap */
-require_once('./admin.php');
+require_once( dirname( __FILE__ ) . '/admin.php' );
 
 $parent_file = 'upload.php';
 $submenu_file = 'upload.php';
@@ -84,7 +84,7 @@ case 'edit' :
 	'<p>' . __('<a href="http://wordpress.org/support/" target="_blank">Support Forums</a>') . '</p>'
 	);
 
-	require( './admin-header.php' );
+	require( ABSPATH . 'wp-admin/admin-header.php' );
 
 	$parent_file = 'upload.php';
 	$message = '';
@@ -136,7 +136,7 @@ if ( current_user_can( 'upload_files' ) ) { ?>
 
 <?php
 
-	require( './admin-footer.php' );
+	require( ABSPATH . 'wp-admin/admin-footer.php' );
 
 	exit;