Fix some bugs. Add more command line options to help specify particular actions to do.
Fix some bugs. Add more command line options to help specify particular actions to do.

git-svn-id: d5d2f0ec4d94f69790b3b7db0928a7621ad98150@4223 e27351fd-9f3e-4f54-a53b-843176b1656c

prashanthpai/PyKerberos,prashanthpai/PyKerberos,prashanthpai/PyKerberos