Merge branch '3.4'

* 3.4:
  [Yaml] Recommend using quotes instead of PARSE_KEYS_AS_STRINGS
  [DependencyInjection] Deprecate autowiring service auto-registration
  Removed useless argument $definition
  [DI] Generate shorter method names for class-based ids
  Fix comment
  [Config] Fix checking class existence freshness
  bumped Symfony version to 3.3.7
  updated VERSION for 3.3.6
  updated CHANGELOG for 3.3.6
  Autoconfigure instances of ArgumentValueResolverInterface
  Deprecate Filesystem/LockHandler
  improve sql explain table display
  Bump minimal PHP version to ^5.5.9|>=7.0.8

Author: nicolas-grekas

DependencyInjection/FormPass.php

@@ -16,7 +16,6 @@
 use Symfony\Component\DependencyInjection\Compiler\ServiceLocatorTagPass;
 use Symfony\Component\DependencyInjection\ContainerBuilder;
 use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
-use Symfony\Component\DependencyInjection\Definition;
 use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
 use Symfony\Component\DependencyInjection\Reference;
 
@@ -53,12 +52,12 @@ public function process(ContainerBuilder $container)
         if (new IteratorArgument(array()) != $definition->getArgument(2)) {
             return;
         }
-        $definition->replaceArgument(0, $this->processFormTypes($container, $definition));
+        $definition->replaceArgument(0, $this->processFormTypes($container));
         $definition->replaceArgument(1, $this->processFormTypeExtensions($container));
         $definition->replaceArgument(2, $this->processFormTypeGuessers($container));
     }
 
-    private function processFormTypes(ContainerBuilder $container, Definition $definition)
+    private function processFormTypes(ContainerBuilder $container)
     {
         // Get service locator argument
         $servicesMap = array();

Extension/DataCollector/FormDataCollector.php

@@ -86,9 +86,6 @@ public function __construct(FormDataExtractorInterface $dataExtractor)
      */
     public function collect(Request $request, Response $response, \Exception $exception = null)
     {
-        if (70000 <= \PHP_VERSION_ID && \PHP_VERSION_ID < 70008) {
-            @trigger_error('A bug in PHP 7.0.0 to 7.0.7 is breaking the Form panel, please upgrade to 7.0.8 or higher.', E_USER_DEPRECATED);
-        }
     }
 
     /**