Blender Git Loki

Merge branch 'temp-checkbox-layout-tweaks-patch' into temp-checkbox-layout-tweaks-apply

Merge branch 'temp-checkbox-layout-tweaks-patch' into temp-checkbox-layout-tweaks

Remove the ability of `add_python_test()` to run without `TEST_PYTHON_EXE`

Every platform should now have a value (configured by the user or detected
by CMake) for `TEST_PYTHON_EXE`, so there is no need to allow running
without. This also removes the need to have some Python files marked
as executable.

Fix inconsistent checkbox text padding with different DPIs

Add `TEST_PYTHON_EXE` as advanced CMake option, and default to `${PYTHON_EXECUTABLE}` on macOS/Linux. The default value on Windows remains the Python from the installation directory.

Merge branch 'blender-v2.83-release'

Fix T75820: Child bone head vanishes when connected parent is hidden

Fix logical error in BLI_hash_pointer_to_color

'hash_b' was always zero as it's range was bit-shifted away.

Merge branch 'blender-v2.83-release'

Fix normal smoothing for light positioning gizmo

Merge branch 'blender-v2.83-release'

Fix T75794: Light point gizmo translate jumps

Holding Ctrl while dragging the light point gizmo would use
uninitialized stack memory if the normal had not been
initialized by a surface.

Now holding Ctrl can be used to drag,
even when there is no surface to orient to.

Bevel modifier: Group Profile and Custom Profile together

Merge branch 'blender-v2.83-release'

Fix T75796: Misaligned quit dialog keymap

Merge branch 'blender-v2.83-release'

GPencil: Add always empty frame when add new layer

The dopesheet needs to have a frame to display the channel, so an empty frame is created in the current frame.

See T66505 for details of why an empty channel cannot be displayed.

UI: support A-Z accelerator keys for pie menus

Converting menus to PIE's was removing convenient key accelerators.

Fix toggling quad-view loosing 3D view clipping

Fix layout issue in Bevel modifier Limit Method