Blender Git Loki

Revert redundant workaround for buffer overflow

This reverts commit 9ddb857c7a9b9ea7ae55ef39879497676d6d8e71.
Should be redundant after rB839bf119c1a774b475.

Better fix for reading fullscreens from old files

Old fix was rBe38481e53b84db. We now solve this in a nicer way by doing
all workspace versioning after lib-linking.

Fix empty default workspace configuration

The default workspace configuration bundled with Blender was supposed to
contain the pre-2.8 default screen-layouts converted to workspaces ("3D
View Full", "Animation", "Compositing", ...). Apparently I committed the
configuration with only one workspace though ("General"), so correcting
now.

Fix crash opening startup.blend as regular .blend (again)

Earlier fix could cause issues and was reverted in rBfc601d8eaa79a7.
Fixed now by avoiding CTX_ call when context hasn't been setup
completely yet.
I think it's fine to assume G.main equals CTX_data_main call at this point.

Fix (harmless) error print with multiple workspaces

Fixes issue reported in https://developer.blender.org/D2451#62155.
Caused by rB8c250c9b73797520.

Fix failing assert on undo

Caused by rB9fa84d640f151 which set the deprecated pointer for forward
compatibility, leading to failling assertion of this pointer being NULL.
We now NULL the pointer again after writing to file.

Merge branch 'blender2.8' into workspaces

Some missing free memory for shaders

Merge branch 'blender2.8' into greasepencil-object

Fix crash when loading .blend with multiple scenes

Fix crash loading pre-2.80 .blends

Caused by rBe0f4fbd45ad6e57b.

Fix unfreed IDProperties, caused by branch merges

Merge branch 'blender2.8' into workspaces

Conflicts:
source/blender/blenloader/intern/readfile.c
source/blender/blenloader/intern/versioning_280.c

Merge branch 'blender2.8' into greasepencil-object

Check zdepth to avoid strokes in back of camera

Do not draw if the stroke ison back of the point of view.

Merge branch 'blender2.8' into workspaces

Conflicts:
source/blender/blenloader/intern/readfile.c

Cleanup: Remove unused variables

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Cycles Denoising: Fix reading of the new properties