Blender Git Loki

Merge remote-tracking branch 'origin/blender2.8' into greasepencil-object

Refactor: Move rna_scene.c layer/collection to rna_layer.c

rna_scene.c was getting way too big with data that was related to
DNA_layer_types.h.

I tried doing it earlier, but failed. But now with the new changes I think it's
better to do this sooner than later.

Merge remote-tracking branch 'origin/blender2.8' into greasepencil-object

Fix OpenGL extension report in system info operator.

Replace loop index to post addition

Fix wrong allocation

The allocation was allocating batches, but must be an array of pointers to batches.

Add way to remove Amber repo, and initial step fro previews.

Remove uses of BKE_gpencil_batch_cache_alldirty()

VSE: draw grid lines at every second

Was hard-coded to 25 frames.

D2893 by @jooert

Docs: improve bmesh exception message

Suggested in T53131

Remove more G.main uses

Remove G.Main from RNA code

Remove the use of global main in RNA functions

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'id_override_static' into asset-engine

Merge branch 'master' into id_override_static

Merge branch 'master' into blender2.8

Correct gtest error in recent beautify change

Move info editor removal versioning code to pre-lib-linking stage

Cleanup: Avoid duplicated topbar creation code in versioning code

Merge branch 'blender2.8' into topbar