Blender Git Loki

BMesh Branch

Got the drawing stuff for editmode to work a little better.
There is a problem where the transparent overlay for
non-backbuffered select in solid mode isn't drawing
transparent. I need to find a way to force opengl vertex
arrays to draw transparent.

Generalized the new opengl vertex array drawing API a
little bit. Added drawEditVerts/FacePoints to
DerivedMesh. Note that the opengl vertex array system is
an optional thing that DerivedMeshes can use, the actual
DerivedMesh drawing stuff is still used for drawing.

Also got non-backbuffered vertex select to work. Wahoo!
Unfortunately the code for bmesh to work with transforms
isn't working, despite being one of the first things I
converted.