Blender Git Loki

Added UI support for seams and sharp edges and cleanup

Merge branch 'master' into blender2.8

Cleanup: strip trailing space in editors

Merge branch 'master' into blender2.8

Cleanup: strip trailing space in GPU module

Merge branch 'master' into blender2.8

Cleanup: newlines at EOF for Python modules

Cleanup: strip trailing space in Python module

Cleanup: strip trailing space in bmesh module

Cycles: Cleanup: Don't use return on function returning void

UI: use subpanel for particle emission source, as an example.

UI: add subpanel support.

In the Python API, any panel becomes a subpanel by setting bl_parent_id
to the name of the parent panel. These subpanels can contain advanced or
less commonly used settings.

Added support for extending sharp edges with bevel

UI: move Cycles device to Performance panel.

Merge branch 'master' into blender2.8

Cleanup: correct variable name, doxy sections

GPUTexture: Fix memleak in orphaned texture management.

DRW: Hair: Add additionnal subdivision smoothing support.

Only use catmull-rom interpolation for now. It's smoother and does not
exhibit artifacts.

Workbench: Fix memleaks.

Wireframe: Optimization for intel GPUs.

Intel GPU take more advantage of the geometry shader than other vendors.

Using a simple geom shader approach in this case is more performant.