[Yaml] fixed some license headers
fixed CS for lambdas
Merge branch '2.3' into 2.4

* 2.3:
  fixed a typo
  fixed CS for lambdas
  [Yaml] fixed some license headers
  Fixes message value for objects
  Check for hour, minute & second validity
  fixed various typos
  [Filesystem] Fixed mirror for symlinks
  [Validator] Removed duplicated test for IBAN in data provider

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Command/ContainerDebugCommand.php
	src/Symfony/Component/Console/Application.php
	src/Symfony/Component/Debug/Tests/ErrorHandlerTest.php
	src/Symfony/Component/Filesystem/Tests/FilesystemTest.php
	src/Symfony/Component/HttpKernel/Tests/DependencyInjection/ContainerAwareHttpKernelTest.php