* gen-make.py   (__main__): be a little more user friendly when we're given arguments    we don't expect.  a usage message is a bit more useful than a backtrace    in such situations.
* gen-make.py
  (__main__): be a little more user friendly when we're given arguments
   we don't expect.  a usage message is a bit more useful than a backtrace
   in such situations.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@845390 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion