Issue #1934802 by msonnabaum: Update symfony to 2.2.

core/composer.json

core/composer.lock

...l/Core/TypedData/Validation/PropertyContainerMetadata.php

core/vendor/README.txt

core/vendor/autoload.php

core/vendor/composer/autoload_classmap.php

core/vendor/composer/autoload_real.php

core/vendor/composer/installed.json

core/vendor/phpunit/php-code-coverage/.travis.yml

core/vendor/phpunit/php-code-coverage/ChangeLog.markdown

...p-code-coverage/PHP/CodeCoverage/Report/HTML/Renderer.php

...overage/Report/HTML/Renderer/Template/dashboard.html.dist

...deCoverage/Report/HTML/Renderer/Template/js/highcharts.js

...deCoverage/Report/HTML/Renderer/Template/js/jquery.min.js

...or/phpunit/php-code-coverage/PHP/CodeCoverage/Version.php

...nit/php-code-coverage/Tests/PHP/CodeCoverage/UtilTest.php

core/vendor/phpunit/php-code-coverage/package.xml

core/vendor/phpunit/phpunit/.gitignore

core/vendor/phpunit/phpunit/.travis.yml

core/vendor/phpunit/phpunit/ChangeLog.md