added @Target annotations
Merge branch '2.3' into 2.4

* 2.3:
  added @Target annotations
Merge branch '2.4'

* 2.4:
  [Validator] added missing @Target
  [Validator] fixed @Target config
  added @Target annotations
  [Process] Add missing docblocks, remove variable declarations

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