Merge branch '2.6' into 2.7

* 2.6: (24 commits)
  [Form] fixed a maxlength overring on a guessing
  [Debug] Show only unique class candidates
  [SecurityBundle] Firewall providers building - code cleaning
  [Filesystem] symlink use RealPath instead LinkTarget
  [DependencyInjection] Remove duplicate  declaration in PhpDumper
  terminals are not interactive on Travis
  Revert "[DependencyInjection] backport perf optim"
  [WebProfiler] Tweaked ajax requests toolbar css reset
  [WebProfilerBundle] replaced pattern to path attribute in routes definitions.
  fix phpdoc's alignment
  Fix missing addExpressionLanguageProvider (used by service container to add expression providers)
  Fixed the AuthenticationProviderInterface alignment
  Fixed the proxy-manager version constraint
  Fix missing space in label_attr
  fix DumpDataCollectorTest after CS changes
  avoid risky tests
  Fixed typo in SecurityContext PHPDoc
  [FrameworkBundle][Template name] avoid  error message for the shortcut notation.
  [DependencyInjection] perf optim: call dirname() at most 5x
  [DependencyInjection] backport perf optim
  ...

Author: nicolas-grekas

Encoder/XmlEncoder.php

@@ -129,21 +129,21 @@ public function decode($data, $format, array $context = array())
         return $data;
     }
 
-     /**
-      * {@inheritdoc}
-      */
-     public function supportsEncoding($format)
-     {
-         return 'xml' === $format;
-     }
-
-     /**
-      * {@inheritdoc}
-      */
-     public function supportsDecoding($format)
-     {
-         return 'xml' === $format;
-     }
+    /**
+     * {@inheritdoc}
+     */
+    public function supportsEncoding($format)
+    {
+        return 'xml' === $format;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function supportsDecoding($format)
+    {
+        return 'xml' === $format;
+    }
 
     /**
      * Sets the root node name.