Blender Git Loki

GPencil: Reorganize code

GPencil: Calculate Selected strokes bound box

This is required for SVG export

Merge branch 'blender-v2.90-release' into master

Merge branch 'blender-v2.90-release' into master

Merge branch 'blender-v2.90-release' into master

Merge branch 'blender-v2.90-release' into master

Docs: add translation keyword argument default for msgctxt

Fix RST syntax for freestyle documentation

Fix T78691: Fly/Walk navigation ignores object channel locks

Cleanup: pass const matrices

Also order return matrices last.

Cleanup: pass const matrices

Also order return matrices last.

Merge branch 'blender-v2.90-release' into master

Fix UV face dot refresh when toggling sync-select

Cleanup: localize creator.c definitions

As creator.c is used for the 'main' function,
avoid obscure declarations being placed so prominently.

- Move Blender as a Python module declarations into it's own section.
- Move USD declaration to an 'extern' just before it's called.

GPU: Convert gpu_matrix.c to C++

GPU: Convert gpu_shader_interface.c to C++

Cleanup: OCIO: Remove extern "C" around blender headers

Handle cases of nested meshes.

This fixes some "implement me" crashes and also case where one
moves a cutter completely inside the cut mesh.
Also fixed a bug in the implementation of mpq3::distance_squared.

GPencil: Add SVG gray scale option

Now it's possible export in gray scale.

Particles: support custom particle events in solver

Previously, there were only particle-birth and time-step events.
Now the solver can handle custom events. On the user level
this does not change anything yet. This feature of the solver
will be used by an upcoming Age Reached Event node and
possibly others. When this node exists, I can finally remove
the hardcoded maximum particle age.