Blender Git Loki

Avoid redundant vert->loop->vert topology lookup

This is only needed for vertex colors, vertices store their own weights,
so this is redundant.

Cleanup: split vert/weight paint into separate members

- Remove unused previous wpaint/vpaint struct members.
- Avoid allocating arrays when they aren't used.

Code Cleanup - Move all old/deprecated bGPDpalette stuff together to be easier to remove/disable in future

Code Cleanup

Resolve bug w/ non-airbrush weight-paint blending

Instead of clamping the max-weight (which locked the value at 1.0),
Store the initial weight and maximum strength used for painting.
Repaint only with a higher strength, using the initial weight.

Build fixes after merge

iroundf -> round_fl_to_int

Merge branch 'blender2.8' into greasepencil-object

Conflicts:
source/blender/editors/transform/transform_manipulator.c

D2830 - 2.8: Fix crash when creating new action

Patch by: Marcelo Mutzbauer (1xundoredo)

Merge branch 'master' into soc-2016-pbvh-painting

Math Lib: Add non-clamped round_* functions

Replace iroundf with round_fl_to_int, add other types

Merge branch 'master' into blender2.8

Code Cleanup: Move 2D Monkey code to its own file in editors/gpencil

Fix: The code to reset GP Objects to Object Mode on load wasn't working

Use BLI_math rounding function, replace sqrtl w/ sqrtf

Cleanup: use shorter uchar, uint type names

Merge branch 'master' into soc-2016-pbvh-painting

Eevee: Fix bug with cubemap shadows.

Eevee: Fix broken World probe.

Eevee: TAA: Remove 32 sample limit.

BLI_rand : Make use of BLI_halton and BLI_hammersley