Blender Git Loki

More attemps to fix numpy building...

Another attempt at fixing numpy path issue.

Some more debug prints i build system...

Merge branch 'master' into cycles_procedural_api

apply changes from alembic review branch

Merge branch 'master' into cycles_procedural_api

CMake: More verbose message in `find_python_package`

Fix several issues with handling of numpy in CMake.

Issues were:
* Abusing of `WITH_PYTHON_INSTALL_NUMPY` by both Audaspace and
Mantaflow.
- `PYTHON_INSTALL` options only decide whether we copy python (and
some extra modules) in our Blender installation. On linux it
makes much more sense to use global python installation.
- Now we have instead a proper `WITH_PYTHON_NUMPY`
* Bad assumptions regarding path of headers relative to path of python
module.
- In current Debian testing, modules are under `python3.9`
directory, while headers are under `python3` directory.
- Now we properly `find_path` for headers as well, modifying
`find_python_package` to take an optional argument for headers.

Note that the required changes done to `extern` libraries are in
blender-specific files that do not exist upstream.

Differential Revision: https://developer.blender.org/D9773

Merge branch 'master' into experimental-build

Merge branch 'master' into greasepencil-object

Fixed USD Import error message.

USD importer: format and compiler warning fixes.

tweak: add options to drive B-Bone scale from handle local scale channels.

Merge branch 'master' into xr-actions-D9124

GPencil: Fix merge error

Merge branch 'master' into greasepencil-object

Conflicts:
source/blender/blenkernel/BKE_gpencil_geom.h
source/blender/blenkernel/intern/gpencil_geom.c

Cleanup

GPencil: Revert wrongly changed variable type for flag

This was changed by error in previous commit

GPencil: Replace uint32 with int32

According to style, negative must be checked with asserts.

Merge branch 'master' into cycles_procedural_api