[DomCrawler] Fix relative path handling in links

Added relative path canonicalization according to RFC 3986, section 5.2.4
Merge branch '2.1' into 2.2

* 2.1:
  [FrameworkBundle] Fix code status in dockblock
  Fixed test to use Reflection
  [Finder] fixed a potential issue on Solaris where INF value is wrong (refs #7269)
  Update RouteCompiler.php
  [FrameworkBundle] avoids cache:clear to break if new/old folders already exist
  [HttpKernel] Fixed possible profiler token collision (closes #7272, closes #7171)
  [ClassLoader] tweaked test
  [ClassLoader] made DebugClassLoader idempotent
  [DomCrawler] Fix relative path handling in links

Conflicts:
	src/Symfony/Component/DomCrawler/Link.php
	src/Symfony/Component/Finder/Iterator/DepthRangeFilterIterator.php
	src/Symfony/Component/Routing/RouteCompiler.php
[DomCrawler] added support for query string with slash

Link\getUri() failed to return correct uri when current query string contains slash
Merge branch '2.1' into 2.2

* 2.1:
  updated VERSION for 2.0.23
  update CONTRIBUTORS for 2.0.23
  updated CHANGELOG for 2.0.23
  [Form] fixed failing test
  [DomCrawler] added support for query string with slash
Merge branch '2.2'

* 2.2: (70 commits)
  change wrapped exception message to be more usefull
  updated VERSION for 2.0.23
  update CONTRIBUTORS for 2.0.23
  updated CHANGELOG for 2.0.23
  [Form] fixed failing test
  [DomCrawler] added support for query string with slash
  Fixed invalid file path for hiddeninput.exe on Windows.
  fix xsd definition for strict-requirements
  [WebProfilerBundle] Fixed the toolbar styles to apply them in IE8
  [ClassLoader] fixed heredocs handling
  fixed handling of heredocs
  Add a public modifier to an interface method
  removing xdebug extension
  [HttpRequest] fixes Request::getLanguages() bug
  [HttpCache] added a test (cached content should be kept after purging)
  [DoctrineBridge] Fixed non-utf-8 recognition
  [Security] fixed HttpUtils class tests
  replaced new occurences of 'Request::create()' with '::create()'
  changed sub-requests creation to '::create()'
  fixed merge issue
  ...

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Command/TranslationUpdateCommand.php
	src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/toolbar.html.twig
	src/Symfony/Component/DomCrawler/Link.php
	src/Symfony/Component/Translation/Translator.php
updated various CHANGELOG files that were not updated when the PRs were merged