[Finder] Unified tests
[Finder] fixed a potential issue on Solaris where INF value is wrong (refs #7269)
merged branch gajdaw/finder_unified_tests (PR #7197)

This PR was merged into the 2.2 branch.

Commits
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a59e5e4 [Finder] Unified tests

Discussion
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[Finder] Unified tests

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | -
| License       | MIT
| Doc PR        | -

Tests for `Finder` are very difficult to read because they contain calls to:

    sys_get_temp_dir() . '/symfony2_finder/'

This improved version simplifies adding and removing new dirs and files.
fix xargs pipe to work with spaces in dir names
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
replace INF to PHP_INT_MAX inside Finder component.

bug issue introduced by 7c66dffa6b
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
[finder] Introduced AccessDeniedException

This exception is thrown when trying to open a non-readable directory.

Squashed commits:
[Finder] Fixed small errors
[Finder] small changes about AccessDeniedException
[Finder] removed unnecessary comment
[Finder] added access denied exception test
[Finder] Updated AccessDeniedException base class
[Finder] fixed access denied exception test
[Finder] native adapters now throw AccessDeniedException on stderr
[Finder] added a CHANGELOG entry for the previous merge