Cycles / Hair: No need to calculate curvepoint() when we use Ribbon curves.
Cycles / Hair: No need to calculate curvepoint() when we use Ribbon curves.

Also some style cleanup.

tangent-opensource/coreBlackbird,pyrochlore/cycles,pyrochlore/cycles,tangent-opensource/coreBlackbird,pyrochlore/cycles,tangent-opensource/coreBlackbird