Make root tests extend the \Test\TestCase

tests/lib/activitymanager.php

tests/lib/api.php

tests/lib/app.php

tests/lib/appconfig.php

tests/lib/archive.php

tests/lib/archive/tar.php

tests/lib/archive/zip.php

tests/lib/autoloader.php

tests/lib/avatar.php

tests/lib/cache.php

tests/lib/cache/file.php

tests/lib/cache/usercache.php

tests/lib/config.php

tests/lib/db.php

tests/lib/dbschema.php

tests/lib/errorHandler.php

tests/lib/geo.php

tests/lib/helper.php

tests/lib/httphelper.php

tests/lib/image.php