Blender Git Loki

add executor class

initial mf procedure data structure

Fix compiler warning

Merge branch 'master' into greasepencil-object

Merge branch 'master' into eevee-gpencil

Enable the `pose_library` add-on by default

This new pose library is based on the asset browser, and will eventually
replace the built-in pose library. Because of this, it is enabled by
default.

Merge branch 'master' into temp-gpencil-io

Rename function to clarify use

LineArt: Remove chaining settings.

LineArt: Properly working threaded geometry loading.

USD Import: UMM handle bool properties.

Added logic to send MDL enable_ bool inputs in UMM queries.

Switch addons submodule to `asset-browser-poselib` branch

Switch addons submodule to `asset-browser-poselib` branch in the
`.gitmodules` file. This should affect any subsequent calls to `git
submodule update`.

Care should be taken when merging this branch back to master, because
this change should *not* be included.

Pose library: when blending, allow shift key for smaller increments of 1%

Animation: add `PBONE_SELECTED` macro to determine selection state of bones

Cycles: Silence unused kg arguments in CPU kernels

The kernel globals might not be used by some of the kernels.
This change makes it so such kernels do not generate a strict compiler
warning.

The motivation is to still be able to see unused arguments (which
could be left-over of refactor and are to be removed) without causing
"polluting" of the compile log with warnings mentioned above.

Using C++17 attribute, since this feels to be the most portable across
compilers solution.

Deduplicate code for filepath

Addons: use `asset-browser-poselib` branch

This commit sets the `release/scripts/addons` to its
`asset-browser-poselib` branch, with the aim that animators checking out
this branch on the main Blender repo also get the corresponding branch
in the addons repo.

Remove unused header files

More cleanup and rename of functions

GPencil: Remove unused variable