Cleanup the config files a bit and update the docs to reflect the changes.

*** NOTE: This will probably cause issues for people currently running a mud
on an older version of gurbalib.
To fix it lookat doc/UPGRADING and doc/INSTALLING for the changes.
Feel free to email me if you have any problems.  I don't want to spend time on
making it automatically upgrade things, and I doubt we have that many users
currently.