clearToken exception is thrown at wrong place.
Merge branch '2.2' into 2.3

* 2.2:
  bumped Symfony version to 2.2.7
  updated VERSION for 2.2.6
  update CONTRIBUTORS for 2.2.6
  updated CHANGELOG for 2.2.6
  clearToken exception is thrown at wrong place.

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php