Merge branch '2.3' into 2.6

* 2.3:
  [FrameworkBundle] silence E_USER_DEPRECATED in insulated clients

src/Symfony/Bundle/FrameworkBundle/Client.php

@@ -165,7 +165,7 @@ class Client extends BaseClient
         $code = <<<EOF
 <?php
 
-error_reporting($errorReporting);
+error_reporting($errorReporting & ~E_USER_DEPRECATED);
 
 if ('$autoloader') {
     require_once '$autoloader';