Merge branch '2.5'

* 2.5:
  Remove aligned '=>' and '='
  Break infinite loop while resolving aliases
  [Security][listener] change priority of switchuser
  Improved the phpdoc for security token classes
  bumped Symfony version to 2.5.7
  updated VERSION for 2.5.6
  updated CHANGELOG for 2.5.6
  bumped Symfony version to 2.3.22
  updated VERSION for 2.3.21
  update CONTRIBUTORS for 2.3.21
  updated CHANGELOG for 2.3.21

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
	src/Symfony/Bundle/SecurityBundle/DependencyInjection/Security/Factory/AbstractFactory.php
	src/Symfony/Bundle/TwigBundle/Controller/ExceptionController.php
	src/Symfony/Component/Debug/ErrorHandler.php
	src/Symfony/Component/Debug/ExceptionHandler.php
	src/Symfony/Component/Form/Extension/Core/Type/BaseType.php
	src/Symfony/Component/Form/Extension/Core/Type/ChoiceType.php
	src/Symfony/Component/Form/Extension/Core/Type/DateTimeType.php
	src/Symfony/Component/Form/Extension/Core/Type/DateType.php
	src/Symfony/Component/Form/Extension/Core/Type/TimeType.php
	src/Symfony/Component/Form/Extension/Validator/Type/FormTypeValidatorExtension.php
	src/Symfony/Component/HttpFoundation/Request.php
	src/Symfony/Component/HttpFoundation/Session/Storage/Handler/MongoDbSessionHandler.php
	src/Symfony/Component/HttpFoundation/Session/Storage/Handler/PdoSessionHandler.php
	src/Symfony/Component/HttpKernel/Kernel.php
	src/Symfony/Component/Security/Core/SecurityContextInterface.php
	src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationFailureHandler.php
	src/Symfony/Component/Security/Http/Authentication/DefaultAuthenticationSuccessHandler.php
	src/Symfony/Component/Security/Http/Firewall/AnonymousAuthenticationListener.php
	src/Symfony/Component/Serializer/Serializer.php
	src/Symfony/Component/Validator/Constraints/File.php

DataCollector/MessageDataCollector.php

@@ -53,10 +53,10 @@ public function collect(Request $request, Response $response, \Exception $except
         // only collect when Swiftmailer has already been initialized
         if (class_exists('Swift_Mailer', false)) {
             $logger = $this->container->get('swiftmailer.plugin.messagelogger');
-            $this->data['messages']     = $logger->getMessages();
+            $this->data['messages'] = $logger->getMessages();
             $this->data['messageCount'] = $logger->countMessages();
         } else {
-            $this->data['messages']     = array();
+            $this->data['messages'] = array();
             $this->data['messageCount'] = 0;
         }