Use relative paths when including files, avoiding include_path. fixes #12594, props sorich87.

git-svn-id: http://svn.automattic.com/wordpress/trunk@14139 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/options-discussion.php

@@ -7,7 +7,7 @@
  */
 
 /** WordPress Administration Bootstrap */
-require_once('admin.php');
+require_once('./admin.php');
 
 if ( ! current_user_can( 'manage_options' ) )
 	wp_die( __( 'You do not have sufficient permissions to manage options for this site.' ) );
@@ -15,7 +15,7 @@ if ( ! current_user_can( 'manage_options' ) )
 $title = __('Discussion Settings');
 $parent_file = 'options-general.php';
 
-include('admin-header.php');
+include('./admin-header.php');
 ?>
 
 <div class="wrap">