Merge branch '3.1'

* 3.1:
  [VarDumper] Fix indentation trimming in ExceptionCaster
  [HttpKernel] Clarify deprecation of non-scalar values in surrogate renderer
  removed @SInCE
  [Security] fixed DebugAccessDecisionManager::setVoters()
  Remove and change unrelevant comments in Validator and Security components.
  [Validator] add missing interface use statement for phpdoc block return type.
  [Validator] UuidValidator must accept a Uuid constraint.
  [Validator] make UuidValidator class formatting consistent.

Conflicts:
	src/Symfony/Component/Validator/Tests/Constraints/AbstractConstraintValidatorTest.php

Author: nicolas-grekas

Fragment/AbstractSurrogateFragmentRenderer.php

@@ -65,7 +65,7 @@ public function render($uri, Request $request, array $options = array())
     {
         if (!$this->surrogate || !$this->surrogate->hasSurrogateCapability($request)) {
             if ($uri instanceof ControllerReference && $this->containsNonScalars($uri->attributes)) {
-                @trigger_error('Passing objects as part of URI attributes to the ESI and SSI rendering strategies is deprecated since version 3.1, and will be removed in 4.0. Use a different rendering strategy or pass scalar values.', E_USER_DEPRECATED);
+                @trigger_error('Passing non-scalar values as part of URI attributes to the ESI and SSI rendering strategies is deprecated since version 3.1, and will be removed in 4.0. Use a different rendering strategy or pass scalar values.', E_USER_DEPRECATED);
             }
 
             return $this->inlineStrategy->render($uri, $request, $options);