Blender Git Loki

Raytrace now has option to change the resolution of the Octree used. It
appeared that the standard size (64x64x64) just works fine for small
scenes, like a single character in a small environment. Larger scenes and
larger environments became exponentional slower.

Disadvantage of larger octrees is longer build time, and overhead traver-
sing it though, so something to tweak based on some experimenting.
A table with test results + blender file will be in CMS soon.

New button is in F10 Render panel, in bottom. Last free spot there! O_o
Sizes supported now 64, 128, 256 or 512.