Change in LIBRARY_COMBO - building backends as a bundle

[Adam Fedor]

I just commited some changes to the libraries. Frederic De Jaeger
submitted a wonderful patch to allow the GUI backends to be compiled as
a bundle, so you can switch between backends with a simple default.

Because of this there really is no need for the backend component of
LIBRARY_COMBO, so I removed it. Now LIBRARY_COMBO by default is just:

gnu-gnu-gnu

You can switch between backends using a user default 'GSBackend'. By
default it uses libgnustep-xgps, but to swtich to the dps backend do:

defaults write NSGlobalDomain GSBackend libgnustep-xdps

Try it out. It's really cool (perhaps it will be easier for people to
improve the DPS backend now?...). 

-- 
Adam Fedor, Digital Optics            | Fudd's law of opposition: Push
fedor@doc.com  http://www.doc.com     | something hard enough, and it 
fedor@gnu.org  http://www.gnustep.org | will fall over.