[Gtkradiant] nightly builds

[Timothee Besset]

There is an experimental setup at http://zerowing.idsoftware.com/nightly/, 
this is the current Alpha branch bundled in a nightly build. This is a 
smaller file, which only has the binary files for the editor. This needs to 
be used if you already have the 1.1-TA setup. For now it contains the 
recent stuff, new Gtk libs, and a new GtkRadiant binary. (you can check the 
changelog)

It will install in a seperate directory and won't affect your "stable" 
installation.

Within a few days I hope to make that public, and be able to release new 
builds regularly. The current plan is to go towards another stable release 
soon, 1.1-TA.1 .. which will be a bugfix release to 1.1-TA mainly. 
Meanwhile we are also working on 1.2 (which will probably be a nightly for 
a while).

Feedback is welcome

TTimo