updated license year
Merge branch '2.0' into 2.1

* 2.0:
  updated license year
  Update src/Symfony/Component/HttpFoundation/Response.php
  [Console] fixed unitialized properties (closes #5935)
  [Bundle] [FrameworkBundle] fixed typo in phpdoc of the SessionListener.
  bumped Symfony version to 2.0.21-DEV
  updated VERSION for 2.0.21
  updated CHANGELOG for 2.0.21

Conflicts:
	src/Symfony/Bundle/SwiftmailerBundle/LICENSE
	src/Symfony/Component/Filesystem/LICENSE
	src/Symfony/Component/HttpFoundation/Response.php
	src/Symfony/Component/HttpKernel/Kernel.php
[CssSelector] added css selector with empty string
merged branch kosssi/bugfix/css-selector-empty (PR #6271)

This PR was squashed before being merged into the 2.0 branch (closes #6271).

Commits
-------

dbafc2c [CssSelector] added css selector with empty string

Discussion
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[CssSelector] added css selector with empty string

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by kosssi at 2012-12-14T18:29:40Z

Bug fix: yes
Feature addition: no
Backwards compatibility break: no
Symfony2 tests pass: yes
License of the code: MIT

---------------------------------------------------------------------------

by stloyd at 2013-01-07T08:21:56Z

@fabpot ping

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by fabpot at 2013-01-07T10:28:54Z

Sorry, but I don't understand the use case.

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by kosssi at 2013-01-07T10:36:31Z

if you have this code :
    \<img src="..." alt="">

you can find
    $this->assertCount(1, $crawler->filter('img[alt=""]'));

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by fabpot at 2013-01-07T10:40:12Z

Then, can you change the unit test with the real use case?

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by kosssi at 2013-01-07T11:05:50Z

I don't know if it suits you

---------------------------------------------------------------------------

by fabpot at 2013-01-07T11:07:11Z

thanks
Merge branch '2.0' into 2.1

* 2.0:
  [Bundle] [FrameworkBundle] fixed indentation in esi.xml services file.
  [TwigBundle] There is no CSS visibility of display, should be visible instead
  [DependencyInjection] fixed a bug where the strict flag on references were lost (closes #6607)
  [HttpFoundation] Check if required shell functions for `FileBinaryMimeTypeGuesser` are not disabled
  [CssSelector] added css selector with empty string
  [HttpFoundation] Docblock for Request::isXmlHttpRequest() now points to Wikipedia
  [DependencyInjection] refactored code to avoid logic duplication

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Resources/config/esi.xml
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/HttpFoundation/File/MimeType/FileBinaryMimeTypeGuesser.php
Merge branch '2.1'

* 2.1:
  [Console] Fix style escaping parsing
  [Console] Make style formatter matching less greedy to avoid having to escape when not needed
  [Bundle] [FrameworkBundle] fixed indentation in esi.xml services file.
  [Component] [Security] fixed PSR-2 coding violation in ClassUtilsTest class.
  [Form] Fixed EntityChoiceList when loading objects with negative integer IDs
  [TwigBundle] There is no CSS visibility of display, should be visible instead
  [Form] corrected source node for a Danish translation
  [DependencyInjection] fixed a bug where the strict flag on references were lost (closes #6607)
  [HttpFoundation] Check if required shell functions for `FileBinaryMimeTypeGuesser` are not disabled
  [CssSelector] added css selector with empty string
  [HttpFoundation] Docblock for Request::isXmlHttpRequest() now points to Wikipedia
  [DependencyInjection] refactored code to avoid logic duplication
  [Form] Deleted references in FormBuilder::getFormConfig() to improve performance
  [HttpFoundation] Update docblock for non-working method

Conflicts:
	src/Symfony/Bundle/TwigBundle/Resources/views/Exception/trace.html.twig
	src/Symfony/Bundle/TwigBundle/Resources/views/Exception/traces.html.twig