[FrameworkBundle] avoids cache:clear to break if new/old folders already exist
merged branch jfsimon/issue-6502 (PR #7260)

This PR was squashed before being merged into the 2.1 branch (closes #7260).

Commits
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1d3da29 [FrameworkBundle] avoids cache:clear to break if new/old folders already exist

Discussion
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[FrameworkBundle] avoids cache:clear to break if new/old folders already exist

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #6502

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by mahmouds at 2013-03-04T19:07:20Z

:+1:
[FrameworkBundle] Fix code status in dockblock
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