Blender Git Loki

Calculation of the center and normal for sculpting would ignore whether the sculpting tool is using the current vertex positions/normals or the positions/normals from before the current edit. Most of the time this will lead to subtle and hard to predict differences from what a user might expect. There was sum testing and discussion about at the end of last summer and even some screen shots showing the difference. I'm going to go ahead and apply this since I do not think it is controversial.