[HttpKernel] fix DebugHandlersListener
updated VERSION for 2.3.21
bumped Symfony version to 2.3.22
updated VERSION for 2.5.6
bumped Symfony version to 2.5.7
Remove aligned '=>' and '='
minor #12293 Remove aligned '=>' and '=' (disquedur)

This PR was squashed before being merged into the 2.3 branch (closes #12293).

Discussion
----------

Remove aligned '=>' and '='

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | [https://github.com/symfony/symfony/issues/12284]
| License       | MIT

Could you said to me if i should make an other PR for 2.5 branch.

Commits
-------

51312d3 Remove aligned '=>' and '='
Merge branch '2.3' into 2.5

* 2.3:
  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 2.3.22
  updated VERSION for 2.3.21
  update CONTRIBUTORS for 2.3.21
  updated CHANGELOG for 2.3.21

Conflicts:
	src/Symfony/Bridge/Propel1/Form/ChoiceList/ModelChoiceList.php
	src/Symfony/Bridge/Propel1/Form/Type/ModelType.php
	src/Symfony/Bridge/Propel1/Logger/PropelLogger.php
	src/Symfony/Bridge/Propel1/Tests/Fixtures/ItemQuery.php
	src/Symfony/Bundle/FrameworkBundle/Command/RouterDebugCommand.php
	src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/ConfigurationTest.php
	src/Symfony/Bundle/FrameworkBundle/Translation/Translator.php
	src/Symfony/Bundle/SecurityBundle/DependencyInjection/SecurityExtension.php
	src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LocalizedController.php
	src/Symfony/Bundle/SecurityBundle/Tests/Functional/Bundle/FormLoginBundle/Controller/LoginController.php
	src/Symfony/Component/Console/Descriptor/JsonDescriptor.php
	src/Symfony/Component/Console/Formatter/OutputFormatterStyle.php
	src/Symfony/Component/Console/Helper/ProgressHelper.php
	src/Symfony/Component/Debug/ErrorHandler.php
	src/Symfony/Component/DependencyInjection/Container.php
	src/Symfony/Component/Finder/Shell/Command.php
	src/Symfony/Component/Form/Extension/Core/DataTransformer/NumberToLocalizedStringTransformer.php
	src/Symfony/Component/Form/Extension/Core/Type/CollectionType.php
	src/Symfony/Component/Form/Extension/Core/Type/FormType.php
	src/Symfony/Component/Form/Extension/Core/Type/IntegerType.php
	src/Symfony/Component/Form/Extension/Core/Type/NumberType.php
	src/Symfony/Component/Form/Extension/Csrf/Type/FormTypeCsrfExtension.php
	src/Symfony/Component/HttpFoundation/File/UploadedFile.php
	src/Symfony/Component/HttpKernel/DataCollector/LoggerDataCollector.php
	src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php
	src/Symfony/Component/HttpKernel/EventListener/ExceptionListener.php
	src/Symfony/Component/HttpKernel/Kernel.php
	src/Symfony/Component/HttpKernel/Tests/EventListener/TestSessionListenerTest.php
	src/Symfony/Component/HttpKernel/Tests/HttpCache/TestMultipleHttpKernel.php
	src/Symfony/Component/Intl/NumberFormatter/NumberFormatter.php
	src/Symfony/Component/Routing/Loader/AnnotationClassLoader.php
	src/Symfony/Component/Routing/Route.php
	src/Symfony/Component/Routing/Tests/Loader/AnnotationClassLoaderTest.php
	src/Symfony/Component/Security/Tests/Core/Validator/Constraints/UserPasswordValidatorTest.php
	src/Symfony/Component/Templating/PhpEngine.php
	src/Symfony/Component/Validator/Constraints/ImageValidator.php
	src/Symfony/Component/Validator/Constraints/TypeValidator.php
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
bug #12285 Various fixes (nicolas-grekas)

This PR was merged into the 2.6-dev branch.

Discussion
----------

Various fixes

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #12278
| License       | MIT
| Doc PR        | -

A 3 in one PR (diff is best viewed [with whitespaces ignored](https://github.com/symfony/symfony/pull/12285/files?w=1)):
- changed the way the DebugHandlerListeners desactivates itself
- reduced a N×N iteration to a N one in ContainerAwareEventListener::removeListener
- fixed an issue in VarDumper

Commits
-------

ac8efd9 [HttpKernel] fix DebugHandlersListener
5af0f89 [EventDispatcher] perf optim
c7cf6cf [VarDumper] fix control chars styling