Refs #4059 Converting updates files to use namespaces

core/Filechecks.php

core/FrontController.php

core/Updates/0.2.10.php

core/Updates/0.2.12.php

core/Updates/0.2.13.php

core/Updates/0.2.24.php

core/Updates/0.2.27.php

core/Updates/0.2.32.php

core/Updates/0.2.33.php

core/Updates/0.2.34.php

core/Updates/0.2.35.php

core/Updates/0.2.37.php

core/Updates/0.4.1.php

core/Updates/0.4.2.php

core/Updates/0.4.4.php

core/Updates/0.4.php

core/Updates/0.5.4.php

core/Updates/0.5.5.php

core/Updates/0.5.php

core/Updates/0.6-rc1.php