Small gmc bug:

[Toshio Kuratomi <badger prtr-13 ucsc edu>]

Currently, gmc doesn't detect when the last window on the screen is closed.
This allows a user to use the File|Close menu option and close all gmc windows
without actually exiting the program.

-Toshio
-- 
badger  \"The Difference between today and yesterday is not so much what has
@prtr-13 \ changed between then and now as what I hope to change by tomorrow."
.ucsc.edu  \~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~=~