Merge branch '2.3' into 2.4

* 2.3:
  fixed typos
  Fixed deprecated method calls
  Add testing against HHVM at Travis-CI
  Fixed typo
  Fixed typo
  fixed acronyms
  [Validator] Fixed IBAN validator with 0750447346 value

Conflicts:
	src/Symfony/Component/HttpKernel/Debug/TraceableEventDispatcher.php

Author: fabpot

Firewall/ExceptionListener.php

@@ -199,7 +199,7 @@ private function startAuthentication(Request $request, AuthenticationException $
      */
     protected function setTargetPath(Request $request)
     {
-        // session isn't required when using http basic authentication mechanism for example
+        // session isn't required when using HTTP basic authentication mechanism for example
         if ($request->hasSession() && $request->isMethodSafe()) {
             $request->getSession()->set('_security.'.$this->providerKey.'.target_path', $request->getUri());
         }

HttpUtils.php

@@ -35,7 +35,7 @@ class HttpUtils
      * Constructor.
      *
      * @param UrlGeneratorInterface                       $urlGenerator A UrlGeneratorInterface instance
-     * @param UrlMatcherInterface|RequestMatcherInterface $urlMatcher   The Url or Request matcher
+     * @param UrlMatcherInterface|RequestMatcherInterface $urlMatcher   The URL or Request matcher
      *
      * @throws \InvalidArgumentException
      */
@@ -146,7 +146,7 @@ public function generateUri($request, $path)
 
         $url = $this->urlGenerator->generate($path, $request->attributes->all(), UrlGeneratorInterface::ABSOLUTE_URL);
 
-        // unnecessary query string parameters must be removed from url
+        // unnecessary query string parameters must be removed from URL
         // (ie. query parameters that are presents in $attributes)
         // fortunately, they all are, so we have to remove entire query string
         $position = strpos($url, '?');