Now using GTK-- instead of wxWindows

The Keso GUI will be based on GTK-- instead of wxWindows. I have started writing the orchestra editor with GTK--, and I really like it. If you want to see what it looks like (it's pretty ugly right now) you can get the latest code from the CVS repository.

I haven't planned to use the GNOME-- libraries, but if I find something interesting that wouldn't take too long to implement I might add that. But right now it's only GTK--.