Blender Git Loki

Cleanup: rename natural string comparison

Outliner: fix unnecessary syncing

Depending on the outliner display mode and the outliner dirty state,
a sync may not be needed on each draw. This commit adds a check
before syncing to prevent syncing when not needed.

Outliner: always sync object selection

This changes from-outliner selection syncing to always sync the
selection state of objects. This allows selecting objects while in
edit mode for parenting or adding hooks. This also fixes a few issues
where the sync algorithm would fail when no active object existed.

Cleanup: clang-format

MSVC: Fix BlendThumb debug build.

Spotted by @deadpin on chat

GPencil: Fix move_to_layer menu in Stroke context menu

Missing in previous commit

make_deps: remove blendthumb

now in regular codebase.

Transform: use recalc geometry depsgraph tag

Better be specific with the data that needs updating.

Fix T69299: Transform origin & skip-children jitters

Cleanup: 2 space indentation

Windows: Fix compatibility with older cmake

Older cmake did not find the BlendThumb sub project.

Fix possible crash with new sculpting cursor, due to stack overflow

Cleanup: Silence debug prints in readfile code.

Not sure since when that one has been enabled, but there is no reasons
to print all that for regular users...

Cleanup: redundant lowercase in BLI_natstrcmp

Cleanup: remove debug print

Tests: reorder render tests so cycles/eevee/workbench are not interleaved

Tests: auto download test files when running "make test"

Tests: move "make test" on macOS and Linux to Python script

Build: integrate make_update.py into Windows make.bat

Buildbot: add script to update libraries and submodules

This is meant to replace the individual build steps for the various libraries
and submodules, so we can easily get the correct revisions associated with
different branches and releases.