Blender Git Loki

Make depsgraph tag for auto-override IDs it updates.

This will reduce amount of needless auto-override checks, at least when
not touching anything related to overriding IDs...

Fix various compiler warnings/errors

Particles: Interpolate size for interpolated children

This finally allows us to use Random factor to add variations to the
interpolated children. This feature never worked since 2007L there was
random factor slider in the interface, but it was only used by simple
children. Now it has affect on interpolated children as well.

Technically, this will break compatibility if older file had random
factor set to something else than 0 (default value is 0 though). But
we are leaving 2.7 series, so can accept such breackage in the name
of supported features.

Merge branch 'blender2.8' into greasepencil-object

# Conflicts:
# source/blender/blenloader/intern/versioning_280.c
# source/blender/makesrna/intern/rna_scene.c

Cleanup: rename 'static override regarding reference ID' tag.

Just 'OK' was waaayyyyyy too generic!

Merge branch 'blender2.8' of git.blender.org:blender into blender2.8

Workbench: Fixed SegFault

In more complex models the object color uniform data is freed before rendered.
We should copy it to local data. but for now we redirected it to a
constant.

Test API in the fur modifier for creating custom guide curves with python.

The fur modifier is just a testbed for the underlying hair system.
The API is intended to allow specifying guide curves with python scripts
without having to worry about inconsistent state. All curves are first
defined in a python-friendly way, then applied to the hair system in one step.

Cleanup: merge checks for same version

Move transform orientation to scene

This was stored in the workspace, selected from the view.
Move both to scene since custom orientations are closely related to your
scene data.

Cleanup: unused var

Merge branch 'blender2.8-workbench' into blender2.8

Cleanup: unused var

CMake: make recent bad level include explicit

This isn't something we should do,
each instance should be noted and removed.

Workbench: Basic Solid Studio

Currently uses static lighting. Will become HDRI lighting.
Added do_versions to set default drawtype_solid and drawtype_texture to
OB_LIGHTING_STUDIO. When View3D space is created drawtype_solid and
drawtype_texture are also set to OB_LIGHTING_STUDIO.

Current studio lighting uses a dot product to simulate static lighting.
Will need to be changed in the future with different lighting models.

Fix makesdna not respecting C++ comments

Tab after C++ comment broke parsing and didn't remove the line at all.
Was there since 2002 at least, probably confused some peeps.

This means commented out code was actually written to SDNA.

Merge branch 'master' into collada

Fix Collada: Keep existing FCurves available in Sampler

The FCurves are needed when we export Keyframes. In that case
we want to preserve the tangent data. Hence we want to keep
the original FCurves available while exporting.

Object Mode: Outlines: Fix precision issue on intel GPU.

Eevee: Use textureGather for minmaxZbuffer downsampling.

I haven't noticed any performance improvement but it could be more important
for other hardware. At least it's not slower!