Blender Git Loki

Bug fixes - start frame value and IMB_crop assert failures

Cleanup: Remove unecessary helper function

Retrieving a mesh's looptris now take's a const mesh after
rB5f8969bb4b4, which removes the need for this function.
Since it's only two lines, avoiding the use of a separate function
in this case is simpler.

Testing global hash table to resuse duplciated seq

Should be replaced with storing hash in editing->runtime

Merge branch 'master' into sculpt-dev

Cleanup: Use const mesh arguments

These functions do not change their source or input mesh, so it can
be passed with const, which means in one case that a function doesn't
have to be responsible for freeing its argument mesh, which is a clearly
better separation of concerns.

LineArt: Support mesh auto smooth.

LineArt: Support mesh auto smooth.

Cleanup: Remove unused includes

Cleanup: Voxel remesh function naming

- Remove BKE prefix for static functions
- Make specific intermediate functions static
- Avoid unecessary "_to_mesh_nomain" suffix

LineArt: Fix(unreported): Child object respect collection visibility.

LineArt: Fix(unreported): Child object respect collection visibility.

LineArt: Fix(unreported): Child object respect collection visibility.

Cleanup: Reorder functions

The Quadriflow remeshing was in the middle of the voxel remesh code.

LineArt: Material flag versioning correction.

By the patch made it in master the version value already advanced (see https://developer.blender.org/D11839), so this versioning code needs to be moved down to that point.

LineArt: Material flag versioning correction.

UI: Show a notification when saving preferences

So far the only way to know if they were saved properly was
to check the terminal.

Also notify when preferences fail to save.

Merge branch 'temp-lineart-contained' into lineart-shadow

Merge remote-tracking branch 'origin/master' into temp-lineart-contained

Merge remote-tracking branch 'origin/soc-2021-porting-modifiers-to-nodes-remesh-voxel' into soc-2021-porting-modifiers-to-nodes-remesh-voxel

# Conflicts:
# source/blender/blenkernel/BKE_node.h

- changes based on review by Jacques Lucke (JacquesLucke)