Issue #2278353 by cilefen, dawehner, hussainweb, jibran, andyceo: Update to Symfony 2.5.

composer.json

composer.lock

core/lib/Drupal/Core/TypedData/TypedDataManager.php

core/lib/Drupal/Core/Validation/ConstraintManager.php

...lidation/Plugin/Validation/Constraint/EmailConstraint.php

core/vendor/composer/autoload_namespaces.php

core/vendor/composer/installed.json

...s-loader/Symfony/Component/ClassLoader/ApcClassLoader.php

...r/Symfony/Component/ClassLoader/ClassCollectionLoader.php

...lass-loader/Symfony/Component/ClassLoader/ClassLoader.php

...oader/Symfony/Component/ClassLoader/ClassMapGenerator.php

...loader/Symfony/Component/ClassLoader/DebugClassLoader.php

...mfony/Component/ClassLoader/DebugUniversalClassLoader.php

...ymfony/class-loader/Symfony/Component/ClassLoader/LICENSE

...s-loader/Symfony/Component/ClassLoader/MapClassLoader.php

...-loader/Symfony/Component/ClassLoader/Psr4ClassLoader.php

...mponent/ClassLoader/Tests/ApcUniversalClassLoaderTest.php

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

...onent/ClassLoader/Tests/Fixtures/ClassesWithParents/A.php

...onent/ClassLoader/Tests/Fixtures/ClassesWithParents/B.php