diff --git a/link b/link
new file mode 100755
index 0000000000..f4070998e7
--- /dev/null
+++ b/link
@@ -0,0 +1,59 @@
+#!/usr/bin/env php
+<?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.
+*/
+
+require __DIR__.'/src/Symfony/Component/Filesystem/Exception/ExceptionInterface.php';
+require __DIR__.'/src/Symfony/Component/Filesystem/Exception/IOExceptionInterface.php';
+require __DIR__.'/src/Symfony/Component/Filesystem/Exception/IOException.php';
+require __DIR__.'/src/Symfony/Component/Filesystem/Filesystem.php';
+
+use Symfony\Component\Filesystem\Filesystem;
+
+/**
+ * Links dependencies to components to a local clone of the main symfony/symfony GitHub repository.
+ *
+ * @author Kévin Dunglas <dunglas@gmail.com>
+ */
+
+if (2 !== $argc) {
+    echo 'Link dependencies to components to a local clone of the main symfony/symfony GitHub repository.'.PHP_EOL.PHP_EOL;
+    echo "Usage: $argv[0] /path/to/the/project".PHP_EOL;
+    exit(1);
+}
+
+if (!is_dir("$argv[1]/vendor/symfony")) {
+    echo "The directory \"$argv[1]\" does not exist or the dependencies are not installed, did you forget to run \"composer install\" in your project?".PHP_EOL;
+    exit(1);
+}
+
+$sfPackages = array('symfony/symfony' => __DIR__);
+foreach (glob(__DIR__.'/src/Symfony/{Bundle,Bridge,Component,Component/Security}/*', GLOB_BRACE | GLOB_ONLYDIR | GLOB_NOSORT) as $dir) {
+    $sfPackages[json_decode(file_get_contents("$dir/composer.json"))->name] = $dir;
+}
+
+$filesystem = new Filesystem();
+foreach (glob("$argv[1]/vendor/symfony/*", GLOB_ONLYDIR | GLOB_NOSORT) as $dir) {
+    $package = 'symfony/'.basename($dir);
+    if (is_link($dir)) {
+        echo "\"$package\" is already a symlink, skipping.".PHP_EOL;
+        continue;
+    }
+
+    if (!isset($sfPackages[$package])) {
+        continue;
+    }
+
+    $sfDir = '\\' === DIRECTORY_SEPARATOR ? $sfPackages[$package] : $filesystem->makePathRelative($sfPackages[$package], dirname(realpath($dir)));
+
+    $filesystem->remove($dir);
+    $filesystem->symlink($sfDir, $dir);
+    echo "\"$package\" has been linked to \"$sfPackages[$package]\".".PHP_EOL;
+}
diff --git a/phpunit b/phpunit
index 53e1a8dc31..86f4cdd5ae 100755
--- a/phpunit
+++ b/phpunit
@@ -1,7 +1,7 @@
 #!/usr/bin/env php
 <?php
 
-// Cache-Id: https://github.com/symfony/phpunit-bridge/commit/29fa7b8196870591f35e1554dd69def482e01fb2
+// Cache-Id: https://github.com/symfony/phpunit-bridge/commit/6d344ad9be7566f875488aa14d905449716c06cf
 
 if (!file_exists(__DIR__.'/vendor/symfony/phpunit-bridge/bin/simple-phpunit')) {
     echo "Unable to find the `simple-phpunit` script in `vendor/symfony/phpunit-bridge/bin/`.\nPlease run `composer update` before running this command.\n";
diff --git a/src/Symfony/Bridge/PhpUnit/ClockMock.php b/src/Symfony/Bridge/PhpUnit/ClockMock.php
index 60d19ffc5f..40ed8ecc0e 100644
--- a/src/Symfony/Bridge/PhpUnit/ClockMock.php
+++ b/src/Symfony/Bridge/PhpUnit/ClockMock.php
@@ -66,7 +66,7 @@ class ClockMock
             return self::$now;
         }
 
-        return sprintf("%0.6f %d\n", self::$now - (int) self::$now, (int) self::$now);
+        return sprintf('%0.6f %d', self::$now - (int) self::$now, (int) self::$now);
     }
 
     public static function register($class)
diff --git a/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php b/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
index 368a5a80a1..571db0eb41 100644
--- a/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
+++ b/src/Symfony/Component/Form/Extension/HttpFoundation/HttpFoundationRequestHandler.php
@@ -108,6 +108,9 @@ class HttpFoundationRequestHandler implements RequestHandlerInterface
         $form->submit($data, 'PATCH' !== $method);
     }
 
+    /**
+     * {@inheritdoc}
+     */
     public function isFileUpload($data)
     {
         return $data instanceof File;
diff --git a/src/Symfony/Component/Form/FormConfigBuilder.php b/src/Symfony/Component/Form/FormConfigBuilder.php
index 801393b6cf..f6cdff5310 100644
--- a/src/Symfony/Component/Form/FormConfigBuilder.php
+++ b/src/Symfony/Component/Form/FormConfigBuilder.php
@@ -32,7 +32,7 @@ class FormConfigBuilder implements FormConfigBuilderInterface
      *
      * @var NativeRequestHandler
      */
-    private static $nativeRequestProcessor;
+    private static $nativeRequestHandler;
 
     /**
      * The accepted request methods.
@@ -496,10 +496,10 @@ class FormConfigBuilder implements FormConfigBuilderInterface
     public function getRequestHandler()
     {
         if (null === $this->requestHandler) {
-            if (null === self::$nativeRequestProcessor) {
-                self::$nativeRequestProcessor = new NativeRequestHandler();
+            if (null === self::$nativeRequestHandler) {
+                self::$nativeRequestHandler = new NativeRequestHandler();
             }
-            $this->requestHandler = self::$nativeRequestProcessor;
+            $this->requestHandler = self::$nativeRequestHandler;
         }
 
         return $this->requestHandler;
diff --git a/src/Symfony/Component/Form/NativeRequestHandler.php b/src/Symfony/Component/Form/NativeRequestHandler.php
index f68efe25cf..37e1c99a74 100644
--- a/src/Symfony/Component/Form/NativeRequestHandler.php
+++ b/src/Symfony/Component/Form/NativeRequestHandler.php
@@ -118,6 +118,9 @@ class NativeRequestHandler implements RequestHandlerInterface
         $form->submit($data, 'PATCH' !== $method);
     }
 
+    /**
+     * {@inheritdoc}
+     */
     public function isFileUpload($data)
     {
         // POST data will always be strings or arrays of strings. Thus, we can be sure
diff --git a/src/Symfony/Component/Form/RequestHandlerInterface.php b/src/Symfony/Component/Form/RequestHandlerInterface.php
index e6360e4498..3d7b45d506 100644
--- a/src/Symfony/Component/Form/RequestHandlerInterface.php
+++ b/src/Symfony/Component/Form/RequestHandlerInterface.php
@@ -27,7 +27,9 @@ interface RequestHandlerInterface
     public function handleRequest(FormInterface $form, $request = null);
 
     /**
-     * @param mixed $data
+     * Returns true if the given data is a file upload.
+     *
+     * @param mixed $data The form field data
      *
      * @return bool
      */