Merge branch '2.5' into 2.6

* 2.5:
  [Filesystem] enforce umask while testing
  [TwigBridge] moved fixtures into their own directory
  Use $this->iniSet() in tests

src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionDivLayoutTest.php

@@ -42,7 +42,7 @@ class FormExtensionDivLayoutTest extends AbstractDivLayoutTest
 
         $loader = new StubFilesystemLoader(array(
             __DIR__.'/../../Resources/views/Form',
-            __DIR__,
+            __DIR__.'/Fixtures/templates/form',
         ));
 
         $environment = new \Twig_Environment($loader, array('strict_variables' => true));

src/Symfony/Bridge/Twig/Tests/Extension/FormExtensionTableLayoutTest.php

@@ -41,7 +41,7 @@ class FormExtensionTableLayoutTest extends AbstractTableLayoutTest
 
         $loader = new StubFilesystemLoader(array(
             __DIR__.'/../../Resources/views/Form',
-            __DIR__,
+            __DIR__.'/Fixtures/templates/form',
         ));
 
         $environment = new \Twig_Environment($loader, array('strict_variables' => true));

src/Symfony/Component/Debug/Tests/DebugClassLoaderTest.php

@@ -62,17 +62,14 @@ class DebugClassLoaderTest extends \PHPUnit_Framework_TestCase
     public function testUnsilencing()
     {
         ob_start();
-        $bak = array(
-            ini_set('log_errors', 0),
-            ini_set('display_errors', 1),
-        );
+
+        $this->iniSet('log_errors', 0);
+        $this->iniSet('display_errors', 1);
 
         // See below: this will fail with parse error
         // but this should not be @-silenced.
         @class_exists(__NAMESPACE__.'\TestingUnsilencing', true);
 
-        ini_set('log_errors', $bak[0]);
-        ini_set('display_errors', $bak[1]);
         $output = ob_get_clean();
 
         $this->assertStringMatchesFormat('%aParse error%a', $output);

src/Symfony/Component/Filesystem/Tests/FilesystemTestCase.php

@@ -13,6 +13,8 @@ namespace Symfony\Component\Filesystem\Tests;
 
 class FilesystemTestCase extends \PHPUnit_Framework_TestCase
 {
+    private $umask;
+
     /**
      * @var string $workspace
      */
@@ -37,6 +39,7 @@ class FilesystemTestCase extends \PHPUnit_Framework_TestCase
 
     public function setUp()
     {
+        $this->umask = umask(0);
         $this->workspace = rtrim(sys_get_temp_dir(), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR.time().rand(0, 1000);
         mkdir($this->workspace, 0777, true);
         $this->workspace = realpath($this->workspace);
@@ -45,6 +48,7 @@ class FilesystemTestCase extends \PHPUnit_Framework_TestCase
     public function tearDown()
     {
         $this->clean($this->workspace);
+        umask($this->umask);
     }
 
     /**