Merge branch '2.6' into 2.7

* 2.6:
  [2.3] Remove useless tests skips
  [ClassLoader] removes deprecated classes from documentation.
  [ClassLoader] added missing deprecation notice.
  [HttpFoundation] Fix an issue caused by php's Bug #66606.
  [Yaml] Update README.md
  Don't add Accept-Range header on unsafe HTTP requests
  simplify hasScheme method
  adapted merge to 2.5
  adapted previous commit for 2.3
  [Security] Don't send remember cookie for sub request
  [Security] fixed wrong phpdoc
  [HttpKernel] Fix UriSigner::check when _hash is not at the end of the uri
  [2.3] Cleanup deprecations

Conflicts:
	src/Symfony/Bridge/Twig/composer.json
	src/Symfony/Bundle/FrameworkBundle/composer.json
	src/Symfony/Bundle/TwigBundle/composer.json
	src/Symfony/Component/ClassLoader/UniversalClassLoader.php
	src/Symfony/Component/Debug/composer.json
	src/Symfony/Component/Form/ButtonBuilder.php
	src/Symfony/Component/HttpKernel/Exception/FatalErrorException.php
	src/Symfony/Component/HttpKernel/Exception/FlattenException.php
	src/Symfony/Component/HttpKernel/composer.json
	src/Symfony/Component/Security/composer.json
	src/Symfony/Component/Validator/composer.json

Author: nicolas-grekas

Tests/bootstrap.php

@@ -0,0 +1,14 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+$loader = require __DIR__.'/../vendor/autoload.php';
+
+Doctrine\Common\Annotations\AnnotationRegistry::registerLoader(function ($class) {return class_exists($class);});

phpunit.xml.dist

@@ -4,7 +4,7 @@
          xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/4.1/phpunit.xsd"
          backupGlobals="false"
          colors="true"
-         bootstrap="vendor/autoload.php"
+         bootstrap="Tests/bootstrap.php"
 >
     <php>
         <!-- Disable E_USER_DEPRECATED until 3.0 -->