Merge branch '2.6' into 2.7

* 2.6:
  [2.6] Towards 100% HHVM compat
  [Security/Http] Fix test
  [Stopwatch] Fix test
  Minor fixes
  Towards 100% HHVM compat
  unify default AccessDeniedExeption message
  trigger event with right user (add test)
  [Security] Initialize SwitchUserEvent::targetUser on attemptExitUser
  [Form] Fixed: Data mappers always receive forms indexed by their names

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php
	src/Symfony/Component/VarDumper/Tests/CliDumperTest.php
	src/Symfony/Component/VarDumper/Tests/HtmlDumperTest.php

Author: nicolas-grekas

Controller/Controller.php

@@ -119,9 +119,9 @@ protected function addFlash($type, $message)
      * @param mixed $attributes The attributes
      * @param mixed $object     The object
      *
-     * @throws \LogicException
-     *
      * @return bool
+     *
+     * @throws \LogicException
      */
     protected function isGranted($attributes, $object = null)
     {
@@ -231,7 +231,7 @@ public function createNotFoundException($message = 'Not Found', \Exception $prev
      *
      * @return AccessDeniedException
      */
-    public function createAccessDeniedException($message = 'Access Denied', \Exception $previous = null)
+    public function createAccessDeniedException($message = 'Access Denied.', \Exception $previous = null)
     {
         return new AccessDeniedException($message, $previous);
     }