Blender Git Loki

GPencil: Fix curve handles not updating

When the handle types of the first and last handles of a cyclic curve
were changed, the handles did not update correctly.

GPencil: Implement editcurve subdivide

Implement an algorithm to subdivide an editcurve.

Nodes: support vector math node in simulation node tree

Nodes: support math node in simulation node tree

Nodes: support Value node in simulation node tree

Nodes: move Math, Vector Math and Value shader nodes to c++ files

This required a little bit of refactoring, because we were using c-only
syntax for the gpu shader names. All tests are still passing.

Merge branch 'master' into soc-2020-info-editor

DRW: Add common point cloud rendering functions

Cleanup: EEVEE: Remove concentric samples.

Cleanup: EEVEE: Remove unused IRRADIANCE_CUBEMAP

DRW: Put viewvecs calculation to view update

This avoids code duplication between draw engines.

EEVEE: Split bsdf_common_lib.glsl into smaller files

Cleanup: Workbench: Remove own viewvecs

Cleanup: EEVEE: Remove own viewvecs

UV: add path select operator that uses the selection

Instead of using the mouse cursor position,
this selects between existing selected elements.

Access this since picking a selection path doesn't
work from the menu.

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

GPencil: Implement curve point circle select

Cleanup: remove unused function

Cleanup: spelling

Docs: remove reference to PYTHONHOME

This is no longer used by default, when '--python-use-system-env' is set
there are many Python environment variables, don't list them in
Blender's help message.