* 2.3:
Textarea value should default to empty string instead of null.
Fix doc blocks
[Process] Fix#10681, process are failing on Windows Server 2003
[Security] fix DBAL connection typehint
[HttpFoundation] status 201 is allowed to have a body
unified return null usages
Conflicts:
src/Symfony/Component/Console/Helper/DescriptorHelper.php
src/Symfony/Component/DependencyInjection/ContainerBuilder.php
src/Symfony/Component/Finder/Tests/Iterator/RecursiveDirectoryIteratorTest.php
src/Symfony/Component/Form/Extension/Core/DataTransformer/IntegerToLocalizedStringTransformer.php
src/Symfony/Component/HttpKernel/Fragment/InlineFragmentRenderer.php