Yaml - Replace Spyc with Symfony Yaml Component.

Mage/Yaml/Exception/DumpException.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_YAML
+ * file that was distributed with this source code.
+ */
+
+namespace Mage\Yaml\Exception;
+
+/**
+ * Exception class thrown when an error occurs during dumping.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @api
+ */
+class DumpException extends RuntimeException
+{
+}