[FrameworkBundle] fixed path replacement on Windows

In the cache, blackslashes in paths can be both represented by a single
or a double backslash.
[FramworkBundle][HttpKernel] Check event listener services are not abstract
Merge branch '2.2' into 2.3

* 2.2:
  [Process] Fix #9182 : random failure on pipes tests
  Fixed propel guessed relations
  [FramworkBundle][HttpKernel] Check event listener services are not abstract
  fixed CS
  Check for lock existence before unlinking
  [FrameworkBundle] fixed path replacement on Windows

Conflicts:
	src/Symfony/Component/Process/Process.php