Blender Git Loki

Cleanup, and do not execute the modifier when 'autosmooth' is disabled.

Merge branch 'master' into temp_custom_loop_normals

More cleanup, simplied set_clnor funcs, reworked mix feature of setsplinor modifier

Now, `BKE_mesh_normals_loop_custom_set()` & co do not take a factor value anymore.
It could make perfomances slightly better, but it was adding some complexity and fuzzyness
in an area that do not need that. So now, caller code is expected to handle
mixing itself, if needed.

And SetSplitNormal modifier now has a real mixing handling, quite similar to
the one of txdata.

Some cleanup/refinements in clnors <-> data conversions.

Update/resurrect clnor icon (was lost in some old merge...).

Merge branch 'master' into temp_custom_loop_normals

Merge branch 'master' into temp_custom_loop_normals

Add advanced normals mixing and interpolation to txdata.

Also, remove clnor interp, this is definitively better done in 'real normals' context!

Nuke CopySplitNormals, txdata proved to be able to handle that nicely, as expected.

Merge branch 'master' into temp_custom_loop_normals

Merge branch 'master' into temp_custom_loop_normals

Conflicts:
source/blender/blenkernel/BKE_cdderivedmesh.h
source/blender/blenkernel/BKE_mesh.h
source/blender/blenkernel/intern/DerivedMesh.c
source/blender/blenkernel/intern/cdderivedmesh.c
source/blender/blenkernel/intern/editderivedmesh.c
source/blender/blenkernel/intern/mesh_evaluate.c
source/blender/blenkernel/intern/mesh_remap.c
source/blender/bmesh/intern/bmesh_mesh.c
source/blender/bmesh/intern/bmesh_mesh.h
source/blender/makesrna/intern/rna_mesh_api.c

Note: commented out part of 'copynors' modifier code, we will get rid of this one soon anyway.

Merge branch 'master' into temp_custom_loop_normals

First use of txdata to transfer custom normals...

Had to add a pre/post process helper to txdata, since with clnors
we want to operate on regular normals data, but store results in
'compressed' clnor data.

Note things seems to be working basically, but the whole branch needs to
re-check how/when it's using (custom)lnors (same goes for master, actually!).

Merge branch 'master' into temp_custom_loop_normals

Merge branch 'master' into temp_custom_loop_normals

Conflicts:
source/blender/makesrna/intern/rna_modifier.c

Merge branch 'master' into temp_custom_loop_normals

Merge branch 'master' into temp_custom_loop_normals

Conflicts:
release/datafiles/blender_icons.svg
release/scripts/startup/bl_ui/properties_data_modifier.py
source/blender/editors/include/UI_icons.h
source/blender/editors/space_outliner/outliner_draw.c
source/blender/makesdna/DNA_modifier_types.h
source/blender/makesrna/intern/rna_modifier.c
source/blender/modifiers/MOD_modifiertypes.h
source/blender/modifiers/intern/MOD_util.c

Merge branch 'master' into temp_custom_loop_normals

Merge branch 'master' into temp_custom_loop_normals

Merge branch 'master' into temp_custom_loop_normals