Merge branch '2.6' into 2.7

* 2.6: (21 commits)
  bumped Symfony version to 2.6.8
  updated VERSION for 2.6.7
  updated CHANGELOG for 2.6.7
  bumped Symfony version to 2.3.29
  updated VERSION for 2.3.28
  update CONTRIBUTORS for 2.3.28
  updated CHANGELOG for 2.3.28
  [Debug] Fixed ClassNotFoundFatalErrorHandlerTest
  [SecurityBundle] use access decision constants in config
  [SecurityBundle] use session auth constants in config
  PhpDoc fix in AbstractRememberMeServices
  [Filesystem] Simplified an if statement
  [SecurityBundle] Use Enum Nodes Instead Of Scalar
  [Debug 2.3] Fix test for PHP7
  [HttpKernel] Check if "symfony/proxy-manager-bridge" package is installed
  [Translation] simplify getMessages.
  [Framework][Translation] added test for debug command.
  Run tests on hhvm instead of hhvm-nightly
  Use HTTPS in README and some other fixes
  add more entropy to generated classnames
  ...

Conflicts:
	.travis.yml
	src/Symfony/Component/HttpKernel/Kernel.php

Translator.php

@@ -292,15 +292,10 @@ protected function getLoaders()
      */
     public function getMessages($locale = null)
     {
-        $catalogues = array();
-        $catalogues[] = $catalogue = $this->getCatalogue($locale);
+        $catalogue = $this->getCatalogue($locale);
+        $messages = $catalogue->all();
         while ($catalogue = $catalogue->getFallbackCatalogue()) {
-            $catalogues[] = $catalogue;
-        }
-        $messages = array();
-        for ($i = count($catalogues) - 1; $i >= 0; $i--) {
-            $localeMessages = $catalogues[$i]->all();
-            $messages = array_replace_recursive($messages, $localeMessages);
+            $messages = array_replace_recursive($catalogue->all(), $messages);
         }
 
         return $messages;