feature#8957 [HttpFoundation] added a way to override the Request class (fabpot)

This PR was merged into the master branch.

Discussion
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[HttpFoundation] added a way to override the Request class

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #7461, #7453
| License       | MIT
| Doc PR        | symfony/symfony-docs#3021

This is an alternative implementation for #7461.

I've also reverted #7381 and #7390 as these changes are not needed anymore.

Todo:

 - [ ] add some tests

Commits
-------

464439d [HttpFoundation] added a way to override the Request class

Author: fabpot

HttpUtils.php

@@ -72,7 +72,7 @@ public function createRedirectResponse(Request $request, $path, $status = 302)
      */
     public function createRequest(Request $request, $path)
     {
-        $newRequest = $request::create($this->generateUri($request, $path), 'get', array(), $request->cookies->all(), array(), $request->server->all());
+        $newRequest = Request::create($this->generateUri($request, $path), 'get', array(), $request->cookies->all(), array(), $request->server->all());
         if ($request->hasSession()) {
             $newRequest->setSession($request->getSession());
         }