Merge branch '4.3' into 4.4

* 4.3:
  [PhpUnitBridge] fix running simple-phpunit on Windows
  fixed phpdocs
  [Messenger] fix broken key normalization

Author: nicolas-grekas

DependencyInjection/Configuration.php

@@ -1130,6 +1130,7 @@ private function addMessengerSection(ArrayNodeDefinition $rootNode)
                     ->end()
                     ->children()
                         ->arrayNode('routing')
+                            ->normalizeKeys(false)
                             ->useAttributeAsKey('message_class')
                             ->beforeNormalization()
                                 ->always()
@@ -1189,6 +1190,7 @@ function ($a) {
                             ->end()
                         ->end()
                         ->arrayNode('transports')
+                            ->normalizeKeys(false)
                             ->useAttributeAsKey('name')
                             ->arrayPrototype()
                                 ->beforeNormalization()
@@ -1236,6 +1238,7 @@ function ($a) {
                         ->scalarNode('default_bus')->defaultNull()->end()
                         ->arrayNode('buses')
                             ->defaultValue(['messenger.bus.default' => ['default_middleware' => true, 'middleware' => []]])
+                            ->normalizeKeys(false)
                             ->useAttributeAsKey('name')
                             ->arrayPrototype()
                                 ->addDefaultsIfNotSet()