[feature/migrations] Migrations now somewhat works

PHPBB3-9737

phpBB/includes/db/migration/tool/interface.php

@@ -0,0 +1,18 @@
+<?php
+/**
+*
+* @package migration
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License v2
+*
+*/
+
+interface phpbb_db_migration_tool_interface
+{
+	/**
+	* Retrieve a short name used for commands in migrations.
+	*
+	* @return string short name
+	*/
+	public function get_name();
+}