Blender Git Loki

Clean Keyframes operator tweaks

By popular demand, the CLean Keyframes operator will now
leave handles and other interpolation settings untouched.

Previously, it would recreate the keyframes from scratch,
keeping only the frame + value, under the assumption that
the handle information was "bad" (i.e. the source of bumps
and roughness, due to bad hand tweaking). However, since
most animators use this on hand-keyed animation instead of
motion-capture data, this assumption didn't hold, and was
actually overly destructive - wiping out lots of hand-adjusted
curve data.