Blender Git Loki

-= Cloth cleanup =-

Fixes:
- Cloth event refactor to solve 2 unknown cache bugs
- Cloth vgroup refactor (faster + scalable stinnes now working)
- Cloth + Collision modifier on one object crash
- Editmode + faceextrude on baked cloth crash
- Stiffness groups would get pinned
- Correct scaled stiffness calculation
- Fixes freeing error under some circumstances
- Deactivating reset/cache freeing when in editmode
- Autobaking setting doesn't get screwed up anymore
- More than 1 collision object in a scene could explode
- Pinning + not protected cache didn't reset cloth
- Start simulation on first frame and not on 2nd
- Maximum structstiff now correct (copy-paste error)
- Loading file with baked cloth calculate the spring length correctly
- Loading file behaviour improved with cache
- Collision object is evaluated first (untested)
- Debug output activated with rt>0

Be carefull: Files with some cloth cache or something should be
regenerated.