added some code to deal with username case (made it all lower)
added some code to getuser to show token existence
- [DH] gaas/gaasd/gaasclient.php
- [DH] gaas/lib/gaasClientMessages.php
- [DH] gaas/lib/gaasdLib.php
- [DH] gaas/lib/gaasdMessages.php
- [DH] gaas/lib/globalLib.php