Blender Git Loki

BMesh: improvements/fixes to select side of active

- Add orientation option (defaults to local, as 2.7x does)
can optionally use global, cursor, view... etc.
- Fix typo which caused select flush to fail.
- Fix for instanced objects (was only checking one instance).
- Only tag for changes if a change is made.
- Skip meshes with all vertices selected.

Cleanup: rename 'vindex' to 'def_nr'

Name hinted 'vertex index', where it's the index of the vertex group.

GP: replace custom API w/ BKE_deform API

Fix grease pencil weight invert

Was always using first group.

Icons: update to rBL62101

- Updated icons for Annotation
- Updated Sculpt Mode icons once again, with a flat base.
Makes them more readable
- Updated Hair tools icons
- Updated Armature Edit mode icons
- Updated Grease Pencil icons

Cleanup: warning, use const args

DRW: Remove unecessary GL calls

Fix pen tablet stuck on Windows for some non-Wacom tablets.

Differential Revision: https://developer.blender.org/D3573

Cleanup: remove double ;

GP: Reduce weight paint data memory footprint

Before, the weight data array was created always, but now only is added when a weight value is assigned.

This change was suggested by algorithm, and both agreed it was good idea.

Static override: add constraint targets as overrideable!

Fix conversion from 2.7x groups to new 2.8 collections - hidden layers.

You cannot immediately add parent's library to newly generated hidden
child collection, since it would allow to get several of those hidden
collections with same name/library. That is strictly forbidden!

So rather loop again on collections after all hidden ones have been
generated, and assign children's library from parent one then.

Cycles: change default emission color to 1 1 1.

Cleanup: style

Cleanup: trailing space

Cleanup: style

DNA: don't deprecate gridview, it's still used

build_environment: fix building openvdb on win32

build_environment: fix build-flags on windows.

build all object files with /bigobj since multiple of the dependencies go over the limit on x86

build_environment: cleanup harvest on windows