Merge branch '2.7' into 2.8

* 2.7:
  [PropertyAccess] ->getValue() should be read-only
  [VarDumper] Fix dumping type hints for non-existing parent classes
  [Config] Fix XmlUtilsTest namespace
  [Console] [TableHelper] make it work with SymfonyStyle.
  Remove dead code
  [Routing] add query param if value is different from default

Conflicts:
	src/Symfony/Component/VarDumper/Tests/Caster/ReflectionCasterTest.php

Author: nicolas-grekas

Serializer.php

@@ -250,15 +250,6 @@ private function denormalizeObject($data, $class, $format, array $context = arra
             return $normalizer->denormalize($data, $class, $format, $context);
         }
 
-        foreach ($this->normalizers as $normalizer) {
-            if (
-                $normalizer instanceof DenormalizerInterface &&
-                $normalizer->supportsDenormalization($data, $class, $format)
-            ) {
-                return $normalizer->denormalize($data, $class, $format, $context);
-            }
-        }
-
         throw new UnexpectedValueException(sprintf('Could not denormalize object of type %s, no supporting normalizer found.', $class));
     }