[Security] Add SimpleForm authentication
[Security] Add simple_token auth method
[Security] Renamed simple_token to simple_http, added support for failure and success handler to both simple firewalls
fixed wrong Logger interface
moved the simple HTTP authenticator to a pre-auth one
[Security] allowed simple pre-auth to be optional if another auth mechanism already authenticated the user
marked some classes as being experimental in 2.3
force the Content-Type to html in the web profiler controllers
updated CHANGELOG for 2.1.11
update CONTRIBUTORS for 2.1.11
updated VERSION for 2.1.11
Merge branch '2.1' into 2.2

* 2.1:
  updated VERSION for 2.1.11
  update CONTRIBUTORS for 2.1.11
  updated CHANGELOG for 2.1.11

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php
removed CHANGELOG for 2.1
updated CHANGELOG for 2.2.2
updated VERSION for 2.2.2
bumped Symfony version to 2.2.3-DEV
Merge branch '2.2' into 2.3

* 2.2:
  bumped Symfony version to 2.2.3-DEV
  updated VERSION for 2.2.2
  updated CHANGELOG for 2.2.2
  removed CHANGELOG for 2.1
  updated VERSION for 2.1.11
  update CONTRIBUTORS for 2.1.11
  updated CHANGELOG for 2.1.11

Conflicts:
	src/Symfony/Component/HttpKernel/Kernel.php
[Security] Removed an unnecessary call to sprintf() and added a test case.
[Security] Added a test to the BasicAuthenticationListener.
[Security] Added tests for the ContextListener.