* 2.6:
Marked the ResolveParameterPlaceHoldersPassTest as legacy
[ExpressionLanguage] fixed issues when parsing postfix expressions
remove unused code
do not inline service factories
resolve class parameters in service factories
[Serializer] Fix object normalization exceptions
Conflicts:
src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services9_compiled.php
src/Symfony/Component/Serializer/Normalizer/GetSetMethodNormalizer.php
src/Symfony/Component/Serializer/Normalizer/PropertyNormalizer.php
src/Symfony/Component/Serializer/Tests/Normalizer/PropertyNormalizerTest.php