Merge branch '2.8' into 3.1

* 2.8:
  [DI] minor FileLoaders tests update
  [HttpKernel] Revert BC breaking change of Request::isMethodSafe()
  [DOMCrawler] Bug fixed
  [Process] Do feat test before enabling TTY mode
  bumped Symfony version to 2.8.15
  updated VERSION for 2.8.14
  updated CHANGELOG for 2.8.14
  bumped Symfony version to 2.7.22
  updated VERSION for 2.7.21
  update CONTRIBUTORS for 2.7.21
  updated CHANGELOG for 2.7.21
  Fix annotation type for $context
  [Doctrine][Form] support large integers

Author: fabpot

Http/Firewall/ExceptionListener.php

@@ -220,7 +220,7 @@ private function startAuthentication(Request $request, AuthenticationException $
     protected function setTargetPath(Request $request)
     {
         // session isn't required when using HTTP basic authentication mechanism for example
-        if ($request->hasSession() && $request->isMethodSafe() && !$request->isXmlHttpRequest()) {
+        if ($request->hasSession() && $request->isMethodSafe(false) && !$request->isXmlHttpRequest()) {
             $this->saveTargetPath($request->getSession(), $this->providerKey, $request->getUri());
         }
     }