Issue #2161397 by dawehner, tim.plunkett, Crell: Update to Symfony 2.4.1.

composer.json

composer.lock

...age/Plugin/LanguageNegotiation/LanguageNegotiationUrl.php

...ge/lib/Drupal/language/Tests/LanguageUrlRewritingTest.php

core/vendor/autoload.php

core/vendor/composer/autoload_namespaces.php

core/vendor/composer/autoload_real.php

core/vendor/composer/installed.json

...y/class-loader/Symfony/Component/ClassLoader/CHANGELOG.md

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

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

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

...fony/class-loader/Symfony/Component/ClassLoader/README.md

...Component/ClassLoader/Tests/ClassCollectionLoaderTest.php

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

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

...fony/Component/ClassLoader/Tests/DebugClassLoaderTest.php

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

...ection/Symfony/Component/DependencyInjection/CHANGELOG.md

...endencyInjection/Compiler/CheckCircularReferencesPass.php