Merge branch '1400748-namespaces' into dbtngtng

core/includes/bootstrap.inc

core/includes/cache.inc

core/lib/Drupal/Component/README.txt

core/lib/Drupal/Core/Cache/CacheBackendInterface.php

core/lib/Drupal/Core/Cache/DatabaseBackend.php

core/lib/Drupal/Core/Cache/InstallBackend.php

core/lib/Drupal/Core/Cache/NullBackend.php

core/lib/Drupal/Core/README.txt

core/tests/README.txt

core/vendor/README.txt

...Symfony/Component/ClassLoader/ApcUniversalClassLoader.php

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

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

core/vendor/Symfony/Component/ClassLoader/LICENSE

core/vendor/Symfony/Component/ClassLoader/MapClassLoader.php

...or/Symfony/Component/ClassLoader/UniversalClassLoader.php

core/vendor/Symfony/Component/ClassLoader/composer.json

...vendor/Symfony/Component/HttpFoundation/ApacheRequest.php

core/vendor/Symfony/Component/HttpFoundation/Cookie.php

...t/HttpFoundation/File/Exception/AccessDeniedException.php