Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

vendor/symfony/class-loader/Psr4ClassLoader.php

@@ -0,0 +1,94 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\ClassLoader;
+
+/**
+ * A PSR-4 compatible class loader.
+ *
+ * See http://www.php-fig.org/psr/psr-4/
+ *
+ * @author Alexander M. Turek <me@derrabus.de>
+ */
+class Psr4ClassLoader
+{
+    /**
+     * @var array
+     */
+    private $prefixes = array();
+
+    /**
+     * @param string $prefix
+     * @param string $baseDir
+     */
+    public function addPrefix($prefix, $baseDir)
+    {
+        $prefix = trim($prefix, '\\').'\\';
+        $baseDir = rtrim($baseDir, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+        $this->prefixes[] = array($prefix, $baseDir);
+    }
+
+    /**
+     * @param string $class
+     *
+     * @return string|null
+     */
+    public function findFile($class)
+    {
+        $class = ltrim($class, '\\');
+
+        foreach ($this->prefixes as $current) {
+            list($currentPrefix, $currentBaseDir) = $current;
+            if (0 === strpos($class, $currentPrefix)) {
+                $classWithoutPrefix = substr($class, strlen($currentPrefix));
+                $file = $currentBaseDir.str_replace('\\', DIRECTORY_SEPARATOR, $classWithoutPrefix).'.php';
+                if (file_exists($file)) {
+                    return $file;
+                }
+            }
+        }
+    }
+
+    /**
+     * @param string $class
+     *
+     * @return bool
+     */
+    public function loadClass($class)
+    {
+        $file = $this->findFile($class);
+        if (null !== $file) {
+            require $file;
+
+            return true;
+        }
+
+        return false;
+    }
+
+    /**
+     * Registers this instance as an autoloader.
+     *
+     * @param bool $prepend
+     */
+    public function register($prepend = false)
+    {
+        spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+    }
+
+    /**
+     * Removes this instance from the registered autoloaders.
+     */
+    public function unregister()
+    {
+        spl_autoload_unregister(array($this, 'loadClass'));
+    }
+}