Blender Git Loki

Pattern-based subdivider works. Included is a
version of editmesh_tools.c (based off of trunk)
that uses it.

I had to write a new function, BM_Connect_Edges,
that connects two verts automagically (without
knowing the shared face beforehand) for it to work.

Some issues:
We need to figure out how BM_Split_Edge/Face
should handle flags.

Customdata isn't being handle properly, most likely
int the conversion functions.

There's memory leak warnings on exit.