[Command] Set the process title as late as possible

To be able to customize to process title in the `initialize`
method of the current command with some arguments or option
Merge branch '2.5'

* 2.5:
  [Command] Set the process title as late as possible
  [Form] Removed constructor argument from FormTypeHttpFoundationExtension for forward compatibility with 2.5
  [Validator] Simplified testing of violations
  remove obsolete test file
  [FrameworkBundle] output failed matched path for clarification
  bug #10242 Missing checkPreAuth from RememberMeAuthenticationProvider
  [Validator] Fixed StaticMethodLoaderTest to actually test something
  [Form] Fixed ValidatorTypeGuesser to guess properties without constraints not to be required
  Use request format from request in twig ExceptionController
  fixed bug
  added the possibility to return null from SimplePreAuthenticationListener
  [Form] Moved POST_MAX_SIZE validation from FormValidator to request handler
  [Form] Add a form error if post_max_size has been reached.
  Response::isNotModified returns true when If-Modified-Since is later than Last-Modified
  [WebProfilerBundle] turbolinks compatibility

Conflicts:
	src/Symfony/Component/Form/Tests/Extension/Validator/Constraints/FormValidatorTest.php