Blender Git Loki

- Displacement now works for all object types. (However, some are only
marginally suitable, like curves, because of relatively low renderface
count). Will have to thoroughly document pros and cons of each type.

Usefullness order (greatest to least):
CC Subsurf Meshes (Displacement likes the smooth normals)
Simple Subsurf Meshes
Manual subdivided meshes
MBalls
Surfaces (Normal errors/ hidden seams)
Curves (Large flat areas with few renderfaces to displace).