Freyja svn ( NeoUmbra ) updates

[mong...@icculus.org]

Some new features are now in svn: extrude face, per mesh tesselation,
per mesh uv mapping and more. Please test these out and bring in more
suggestions.

I'm still working on Cg shaders and a unified material system AND the
skeletal animator and keyframing. However it turns out more work
keeps popping up in mesh editor. I could be adding splines based
editing soon... email or post here for your vote. I have time atm to
work on freyja, so now is the time to ask for your favorite feature.