Added doc comments
[HttpFoundation] Header `HTTP_X_FORWARDED_PROTO` can contain various values
Some proxies use `ssl` instead of `https`, as well as Lighttpd mod_proxy allows
value chaining (`https, http`, where `https` is always first when request is encrypted).
Fixed an entity class name.

Broken in #7940.
Run all tests in parallel.
bugix: CookieJar returns cookies with domain "domain.com" for domain "foodomain.com"
updated CHANGELOG for 2.2.7
update CONTRIBUTORS for 2.2.7
updated VERSION for 2.2.7
fixed typo
bumped the version
updated CHANGELOG for 2.2.8
updated VERSION for 2.2.8
bumped Symfony version to 2.2.9
[Routing] removed extra argument
[Security] fixed wrong phpdoc
Fix problem with Windows file links (backslash in JavaScript string)
fixed Client when using the terminable event