Blender Git Loki

removed my SB hack from particle collision code
(which still can't really handle moving targets)
leaving 2 bug fixes
1. multiple objects need a reset on cache variable
2. quads always need to be handled as 2 triangles
(since they don't need to share a plane)

added a collision detecting function in effect.c for SB
( no need to be there, but i did not find a better place )
but should handle 'moving targets' up to 0.2 blender units/frame

well .. important info in this case:
collision
uses 'face normal' to decide if *intrusion* happend
uses 'damping' of collision target to slow down movement
when *intrusion* happend

+some more removing unneeded code in softbody.c