Blender Git Loki

Upgraded max limit for faces in render. Up to now, quads were zbuffered
as triangles, with a tag bit to denote which triangle was which part of
the quad. That was hardcoded bit 0x800000, which allows a maximum of
about 8 million quads...

I've made this a nice #define, set to be 16 times larger. So, now the
facejunkies can go up to 128 Million faces, were it not that this will eat
up a load of memory!
I only have 1 Gig in this machine. A test with 9M vertices and 7.5M quads
eats up 912 MB of memory already. If this becomes a real issue, I know
tricks how to make the vertices 20 bytes smaller, and faces 4 bytes, which
would in the above case save about 200 MB. Not much... but probably worth
the try? A much better method is of course 'bucketing' the renderdata per
tile. It's a spec of the render recode, but not a quicky to add.

Also: bug fix in curve code. There was a short counter still, crashing on
large curves with resol set to 1024 :)