Blender Git Loki

Mark edges that can have seams in Bevel.

Works by going clockwise from first edgehalf in BevVert and marking seam length
each time it encounters a pair of edges with seams

Merge branch 'master' into blender2.8

Cleanup: nuke G.main out of BKE PackedFile code.

Fix depsgraph copying and evaluating hidden objects.

Cleanup: unused defines

Merge branch 'master' into blender2.8

Cleanup: use doxy sections for space types

Also use struct names in enum/define comments.

Cleanup: return types in stubs

Depsgraph: optimization of driver evaluation with many drivers.

WM: Use tool-system for setting brushes

This sets the tool instead of the brush, with cycling support.

Tool System: Utility to set the tool by name

Wrapper for the Python operator.

Fix OpenCL compilation error - BPT without SSS.

Workbench: Highlights

Made the highlights darker (using the defaults of blender 2.7
- sharpness = 50
- spec color = 0.025 (I bumped it to 0.1)
- added a log2 to the frontal camera light to reveal more details of the
mesh

Tool System: optionally cycle tools in a group

Add the ability for key bindings to set a tool-group,
which cycles to the next tool when the tool is already active.

RNA: add tool index access

Needed for changing the active tool from Python.

UI: toolbars now redraw on tool change

Removed Object color from workbench. Added Highlights to FLAT shading.

Generic Viewport Panel for Materials

Is enabled for all render engines as workbench will be rendering
SOLID/Texture modes and uses these settings.

Cleanup: style/whitespace

Also use 'uint'.

Cleanup: redundant check