* 1.2:
  Minor optimization in ValidatorServiceProvider
  bumped version to 1.2.2-DEV
  prepared the 1.2.1 release
  updated CHANGELOG
  added a caution about how to configure security for php-cgi/Apache

Conflicts:
	doc/changelog.rst
	doc/phar.rst
	src/Silex/Application.php
	src/Silex/Provider/ValidatorServiceProvider.php