Blender Git Loki

[#24263] Hooks influence area with vertex group assigned is not effected
changes...
- use vertex weights when hook indices are used.
- use force as well as vertex weights (overall multiplier), before when vertex weights were used force was ignored.
- rearranged the loops to be less confusing.
- falloff now in its own function.
- falloff curve slightly different, smoother towards the center /w 2 less sqrt calls.