Umbra ABI becomes stable libfreyja!

[mong...@icculus.org]

I stayed up all night to finish the port of plugins and the stable
Freyja application branch to the new Umbra ABI. The ABI isn't frozen,
but it unifies all plugin work and makes the upgrade path more clear.
The old Egg backend is still kicking with some modifications behind
this branch, however there is currently no native file format. Just
import/export skeletons as SMD and meshes as ASE for testing. Those
too should allow for a close fit. The Eggv8 plugin is about done, so
you'll be able to import/export that format again soon. The entire ABI
and plugin set got updated during porting, so please report any
regressions you find.

Hopefully after Xmas binary release, I can remove the last of the Egg
backend and replace it with the updated Umbra based system. This will
allow for scene based modeling, and other features not possible with
the Egg backend. The Egg v8 backend lasted for years, and I consider
it a good design for that reason. However it's time to move the
project forward from just basic editing to a character animation suite.

[mong...@icculus.org]

Oh I forgot to mention, the new mesh generation system isn't ready yet
so shapes are disabled in svn as of this writing. I'm going to release
a new quad based system to make extrude easy for you guys. Also I'll
add a user activated tesselator and other tools. The ASE plugin
doesn't save quads or complex polygons like Egg, sorry. I'll try and
update svn with Egg export after I sleep some. =(

[mong...@icculus.org]

I just updated the SVN to support Egg as native file format and added
quad cube into Freyja really quick. This should address the issues for
people needing to load/save something with this current branch. In the
near future the native format will change, since the Egg format is
getting hard to maintain.