Issue #1764342 by Rob Loach: Update Symfony and Doctrine to RC2.

core/composer.lock

core/vendor/.gitignore

core/vendor/autoload.php

core/vendor/composer/ClassLoader.php

core/vendor/composer/autoload_namespaces.php

core/vendor/composer/autoload_real.php

core/vendor/composer/installed.json

core/vendor/doctrine/common/composer.json

...mmon/lib/Doctrine/Common/Annotations/AnnotationReader.php

...ommon/lib/Doctrine/Common/Collections/ArrayCollection.php

...trine/common/lib/Doctrine/Common/Collections/Criteria.php

...ine/common/lib/Doctrine/Common/Collections/Selectable.php

core/vendor/doctrine/common/lib/Doctrine/Common/Version.php

...ests/Doctrine/Tests/Common/Collections/CollectionTest.php

.../tests/Doctrine/Tests/Common/Collections/CriteriaTest.php

...r/Symfony/Component/ClassLoader/Tests/ClassLoaderTest.php

...ony/Component/ClassLoader/Tests/ClassMapGeneratorTest.php

.../Component/ClassLoader/Tests/UniversalClassLoaderTest.php

.../class-loader/Symfony/Component/ClassLoader/composer.json

...ymfony/Component/DependencyInjection/Dumper/PhpDumper.php