Blender Git Loki

First test of material masking

This is to open holes in fill areas

GPencil: Write operator creates two curve points

The dummy operator that writes data to the editcurve
of a bGPDstroke now writes two curve points. One for the first stroke
point and one for the last stroke point.

GPencil: Remove duplicated toggle button code

Move iteration variable inside the loops.

To limit the scope & for better naming, moved the variables
`MVert *vertex` and `const Polygon &polygon` inside the loops.

Merge branch 'master' into soc-2020-outliner

Formatting, edit comments, remove extra io::obj

Changes here:

Made variables `vertex` & `polygon` for better readability in writer.
`data_to_export->mvert`
`data_to_export->polygon_list`

Edited comments as per review in D7918.

Removed extraneous `io::obj::` being used in the same namespace.

Fluid: Added an option for color mapping fluid grids without any interpolation

Merge branch 'master' into soc-2020-fluid-tools

Merge branch 'master' into eevee-motionblur-object

Fix T77367: Blender's snap package ignores command line options

Merge branch 'arcpatch-D7950' into soc-2020-info-editor

# Conflicts:
# source/blender/editors/space_info/info_report.c
# source/blender/makesdna/DNA_space_types.h

Merge branch 'arcpatch-D6926' into soc-2020-info-editor

# Conflicts:
# source/blender/makesdna/DNA_space_types.h

Continue merge

Merge branch 'greasepencil-edit-curve' into soc-2020-greasepencil-curve

LANPR: Background calculation now doesn't block user input. (Messy code for now)

Merge branch 'master' into greasepencil-edit-curve

Merge branch 'master' into greasepencil-object

Cleanup: Compiler debug flags.

LANPR: Fixed crashes during duplicate point removal in chain connecting.

LANPR: Fix readfile.c node tree linking error from merge.