Merge branch '3.4' into 4.0

* 3.4:
  [HttpKernel] fix PHP 5.4 compat
  Fix surrogate not using original request
  [Finder] Update RealIteratorTestCase
  [Routing] remove unneeded dev dep on doctrine/common
  [minor] SCA
  [Validator] Remove BOM in some xlf files
  Fix #27378: Error when rendering a DateIntervalType form with exactly 0 weeks
  [HttpKernel] fix session tracking in surrogate master requests

Author: nicolas-grekas

Data/Generator/LanguageDataGenerator.php

@@ -157,9 +157,7 @@ protected function generateDataForMeta(BundleReaderInterface $reader, $tempDir)
         return array(
             'Version' => $rootBundle['Version'],
             'Languages' => $this->languageCodes,
-            'Aliases' => array_map(function (\ResourceBundle $bundle) {
-                return $bundle['replacement'];
-            }, iterator_to_array($metadataBundle['alias']['language'])),
+            'Aliases' => array_column(iterator_to_array($metadataBundle['alias']['language']), 'replacement'),
             'Alpha2ToAlpha3' => $this->generateAlpha2ToAlpha3Mapping($metadataBundle),
         );
     }