Blender Git Loki

Fix string size passed into name prefix function

Cleanup: unused variables

Cleanup: unused imports

Cleanup: redundant layer access

Cleanup: use braces for BLI_kdtree

Cleanup: remove redundant check

Remove 3DS add-on from factory startup.

Merge branch 'master' into greasepencil-object

GPencil: Fix missing guide topbar menu

This bug was introduced in previous commit

Cleanup: remove Cycles advanced shading features toggle.

It's effectively always enabled, only not on some unsupported OpenCL devices.
For testing those it's not useful to disable these features. This is replaced
by the more fine grained feature toggles that we have now.

Cleanup: rename DEPRECATED to UNUSED

While the flags have been deprecated they're currently unused.
Rename for clarity.

Cleanup: improve comments.

ED View3d: Fix possible bug when subtracting unsigned ints.

Related to rB681661dbed12.

Python API: add Python-defined node groups for shaders and compositing.

This was already supported for Cycles shader nodes, but now also works for
Eevee and compositing nodes. Instead of a generic NodeCustomGroup, now
there is ShaderNodeCustomGroup and CompositorNodeCustomGroup that can be
subclassed and registered.

Differential Revision: https://developer.blender.org/D4370

Fix ID user counting issues with NodeCustomGroup.

User counting now happens before init() and after free() methods, so that
the ID users are in a valid state when Python might modify them. ID user
counting was moved into node.c and simplified.

Patch by Miguel with further refactoring by Brecht. Ref D4370.

Cleanup: fix compiler warnings.

GPencil: Fix compiler warning

The fill flag was wrong and it was checking the color, not a flag.

GPencil: Back Canvas Grid to Draw position

Undo the previous commit and keep the Canvas in the position used in Draw mode. Change the position by mode looks strange.

Brush cursor: Fix crash with 2D falloff

Disable the normal preview when 2D falloff is enabled.

Merge branch 'master' into greasepencil-object