fix issue #8499 modelChoiceList call getPrimaryKey on a non object
Merge branch '2.2' into 2.3

* 2.2:
  [PropertyAccess] added moves to pluralMap
  [Security] fixed issue where authentication listeners clear unrelated tokens
  fix issue #8499 modelChoiceList call getPrimaryKey on a non object
  [DependencyInjection] Add exception for service name not dumpable in PHP

Conflicts:
	src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
	src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
	src/Symfony/Component/Security/Tests/Http/Firewall/BasicAuthenticationListenerTest.php