Blender Git Loki

New voxel texture mode "Hair", for displaying the internal hair volume
structure as a texture.

This is mostly a debugging feature that may be removed again later.

Fixed voxel grid initialization from hair points and colliders by using
the suggested tent function from the original paper.

Plain float->int conversion for the grid location otherwise leads to
skewed data and unnecessary loss of information.

Code cleanup: Use a variable-sized array for the hair volume velocity
smoothing and collision code, split into multiple functions.

Add simple code to add (ctrl-P) and display parents. (WIP)

This is not a serious attempt though and possibly a good solution should
go through a dependency graph. Also there are some crashes on undo.

Merge branch 'master' into terrible_consequencer

Fix cuddly strips shading and drawing issues. Also now there are no
issues on big zooms (they behave really cuddly)

Cuddlification of strips complete. Still need to make corners shrink on big zoom

Strip drawing : Remove handle square, triangle is enough indicator here.
Also add cuddly outline