[Security] fixed a leak in the ContextListener
[Security] fixed a leak in ExceptionListener
Merge branch '2.2' into 2.3

* 2.2:
  Fixing singular form for kisses, accesses and addresses.
  fixed some circular references
  [Security] fixed a leak in ExceptionListener
  [Security] fixed a leak in the ContextListener
  Ignore posix_istatty warnings
  typos
  [HttpKernel] fixed route parameters storage in the Request data collector (closes #8867)
  Return BC compatibility for `@Route` parameters and default values

Conflicts:
	src/Symfony/Bundle/FrameworkBundle/Templating/Helper/FormHelper.php
	src/Symfony/Component/Console/Application.php