Blender Git Loki

Fix T78238: issue loading existing .blend files with Optix viewport denoiser

Also add additional validation to ensure the denoiser is supported before
trying to use it.

Fix incorrect Python API description for bpy.data.version

Ref T76058

Revert "Fix T78071: Drivers reading object visibility not updating automatically"

This reverts commit baa0da3e69a1225cd18c075be5563c7d811b5347.

The commit causes some issues I didn't foresee, I'd rather take the time
to do it properly than hastily try and commit a fix for it.

Cleanup: spelling

Bumped version o blender v2.83.2-beta

Fix T78071: Drivers reading object visibility not updating automatically

An object can be targeted by a driver that reads its `hide_viewport` or
`hide_render` property. The existence of such a driver will create a
relation between the 'sync base flags' depsgrpah node, and the datablock
containing the driver. When the object is hidden, however, it has no
base, and thus it had no 'sync base flags' depsgraph node. To support
such a driver, that depsgraph node is now always added, but for hidden
objects it will just be a no-op. If the node is not used by anything, it
will be automatically disconnected and have a negligible effect on
performance.

update comment

Minor merge conflict resolution

Merge branch 'master' into soc-2020-io-performance

Cycles: add support for rendering sculpt vertex colors

Ref T78041

WIP: Create data structure for reporting logs

Use the triangle normal if the hit point lies inside the triangle

Build: remove unused lapack/hidapi/mingw32 build infrastructure

Ref T76184

Build: upgrade OpenImageDenoise to 1.2.1

This requires ISPC for building OpenImageDenoise, so that is now added as
a dependency as well. Blender itself does not need ISPC for building so it
is not included as part of the precompiled libraries.

Differential Revision: https://developer.blender.org/D7641

Build: upgrade a few smaller Linux/macOS only libraries to latest versions

* jemalloc 5.2.1
* xml2 2.9.10
* bzip2 1.0.8
* ffi 3.3
* lzma 5.2.5
* ssl 1.1.1g
* sqlite 3.31.1

Ref T78252

Fix viewport denoising not working if start samples higher than total samples

LANPR: Added placeholder modifier in GP.

Revert "Fix T77460: Easy to create cyclic dependencies in collections and crash Blender."

This reverts commit 293b00beb5df27b4455de743fd0684f0988153b0.

Revert "Fix (unreported) critical mistake in Collection liblink code in readfile.c."

This reverts commit 517f32045c282f1031299268ad0ebfa8f934bd1a.

LANPR: Use only (0,1) for crease threshold.