merge phpunit into filesystem

3rdparty/simpletest/HELP_MY_TESTS_DONT_WORK_ANYMORE

3rdparty/simpletest/LICENSE

3rdparty/simpletest/README

3rdparty/simpletest/VERSION

3rdparty/simpletest/arguments.php

3rdparty/simpletest/authentication.php

3rdparty/simpletest/autorun.php

3rdparty/simpletest/browser.php

3rdparty/simpletest/collector.php

3rdparty/simpletest/compatibility.php

3rdparty/simpletest/cookies.php

3rdparty/simpletest/default_reporter.php

3rdparty/simpletest/detached.php

...arty/simpletest/docs/en/authentication_documentation.html

3rdparty/simpletest/docs/en/browser_documentation.html

3rdparty/simpletest/docs/en/docs.css

3rdparty/simpletest/docs/en/expectation_documentation.html

3rdparty/simpletest/docs/en/form_testing_documentation.html

3rdparty/simpletest/docs/en/group_test_documentation.html

3rdparty/simpletest/docs/en/index.html