added forwards compatibility for the Filesystem component

src/Symfony/Component/Filesystem/Filesystem.php

@@ -0,0 +1,23 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Filesystem;
+
+use Symfony\Component\HttpKernel\Util\Filesystem as BaseFilesystem;
+
+/**
+ * Filesystem.
+ *
+ * Added for forwards compatibility with Symfony2.1
+ */
+class Filesystem extends BaseFilesystem
+{
+}