Classes should be removed only when adaptive is specified
[Process] Added ProcessUtils::escapeArgument() to fix the bug in escapeshellarg() function on Windows
[HttpKernel] made the classmap lazy-loaded
[HttpFoundation] getClientIp is fixed.

The getClientIp now returns ip of the earliest server in a proxy chain when all the servers in the chain are trusted proxies. Before this patch the getClientIp used to return null at such condition.
Some appropriate tests are added.
[FrameworkBundle] Allow to debug container parameters
[Security] Removed unused var
[Finder] added Finder::ignoreUnreadableDirs() method
Add parameters debug to the container:debug command
make twig extension handle custom template escaping guesser
[Intl] Refactored Locale component into two new components Icu and Intl
[Form] Changed component to use the Intl component
[Validator] Changed component to use the Intl component
[Locale] Added default locale
[Intl] Changed Intl::getStubIcuVersion() to Intl::getIcuStubVersion()
Fixed PHPDoc
[Form] Fixed failing tests
[Intl] Changed Intl::getIcuVersion() to return the stub version if the intl extension is not loaded
[Intl] Removed method IntlTestCase::skipIfInsufficientIcuVersion()
[Intl] Added autoload.php which was ignored by .gitignore
[Intl] Made the $locale parameter optional in the bundle interfaces