first commit

wp-admin/ms-upgrade-network.php

@@ -0,0 +1,13 @@
+<?php
+/**
+ * Multisite upgrade administration panel.
+ *
+ * @package WordPress
+ * @subpackage Multisite
+ * @since 3.0.0
+ */
+
+require_once __DIR__ . '/admin.php';
+
+wp_redirect( network_admin_url( 'upgrade.php' ) );
+exit;