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

vendor/symfony/http-kernel/Config/EnvParametersResource.php

@@ -0,0 +1,95 @@
+<?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\HttpKernel\Config;
+
+use Symfony\Component\Config\Resource\ResourceInterface;
+
+/**
+ * EnvParametersResource represents resources stored in prefixed environment variables.
+ *
+ * @author Chris Wilkinson <chriswilkinson84@gmail.com>
+ */
+class EnvParametersResource implements ResourceInterface, \Serializable
+{
+    /**
+     * @var string
+     */
+    private $prefix;
+
+    /**
+     * @var string
+     */
+    private $variables;
+
+    /**
+     * Constructor.
+     *
+     * @param string $prefix
+     */
+    public function __construct($prefix)
+    {
+        $this->prefix = $prefix;
+        $this->variables = $this->findVariables();
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function __toString()
+    {
+        return serialize($this->getResource());
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function getResource()
+    {
+        return array('prefix' => $this->prefix, 'variables' => $this->variables);
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function isFresh($timestamp)
+    {
+        return $this->findVariables() === $this->variables;
+    }
+
+    public function serialize()
+    {
+        return serialize(array('prefix' => $this->prefix, 'variables' => $this->variables));
+    }
+
+    public function unserialize($serialized)
+    {
+        $unserialized = unserialize($serialized);
+
+        $this->prefix = $unserialized['prefix'];
+        $this->variables = $unserialized['variables'];
+    }
+
+    private function findVariables()
+    {
+        $variables = array();
+
+        foreach ($_SERVER as $key => $value) {
+            if (0 === strpos($key, $this->prefix)) {
+                $variables[$key] = $value;
+            }
+        }
+
+        ksort($variables);
+
+        return $variables;
+    }
+}