Blender Git Loki

Patch by Jose Geraldo Brito
Tracker 31061
It cures the stiff quad option and does not seem to harm.
Nowever the stiff quads behave strange in a ngom mesh.
I can imagine that other parts in the sofybody module may be broken by the ngon structure. Well ngons and softbodies are not relly friends:
negon wants less edges softbodies would work better if more structural edges were possible