Blender Git Loki

WIP cycles packed texture stuff

WIP tex image node

WIP GPU stuff

WIP add ptex vertex attrib to DerivedMesh for GPU drawing

WIP imbuf hacks

WIP Ptex texture packing

Really stupid but working texture test

WIP add Ptex UVs to Cycles mesh

Removed deprecated UI button for the hair debug flag.

Merge branch 'gooseberry' into strand_editmode

Conflicts:
source/blender/blenkernel/CMakeLists.txt
source/blender/blenkernel/intern/customdata.c
source/blender/blenkernel/intern/particle.c
source/blender/blenloader/intern/readfile.c
source/blender/editors/physics/particle_edit.c
source/blender/editors/space_view3d/drawobject.c
source/blender/makesdna/DNA_brush_types.h
source/blender/makesdna/DNA_customdata_types.h
source/blender/physics/intern/implicit.h

Support for the (still experimental) parent coloring mode in regular
strand drawing.

Parent coloring is currently still entirely random, but can be improved
for all use-cases later.

Temporary customdata mask tweak

Tesselation for Ptex loop layer

RNA updates for Ptex

Move Cycles' Ptex attribute from vertices to corners

Add some Ptex code to BKE

Add a couple new CustomData layers for Ptex

Add some Ptex types to Mesh SDNA

Apply shape keys directly to the hair key data, instead of only applying
to the hair dynamics input DM.

Also this calculation has to happen before caching paths, otherwise
there is a 1-update lag because parent paths still use old values.

Depsgraph: Add debug print to bone done callback