* @ingroup Maintenance
*/
-require_once( dirname( __FILE__ ) . '/Maintenance.php' );
+require_once( __DIR__ . '/Maintenance.php' );
+/**
+ * Maintenance script to cleans up old database tables, dropping old indexes
+ * and fields.
+ *
+ * @ingroup Maintenance
+ */
class CleanupAncientTables extends Maintenance {
public function __construct() {