Blender Git Loki

Cleanup: minor gpencil changes

- Replace BKE_brush_getactive_gpencil -> BKE_paint_brush
(no need for per-paint-type brush access).
- Rename TOT_GP_EDITBRUSH_TYPES -> GP_EDITBRUSH_TYPE_MAX
(avoid sharing prefix w/ unrelated constants).
- Rename instances of `GP_EditBrush_Data` to 'gp_brush'
(`Brush` is typically called 'brush').

Fix headless build

Update test, missed when changing Object.select_set()

GP: Use same name when duplicate datablock

Depsgraph eval function for hair on object level that computes follicle space.

Make return values for mesh sample eval optional.

Fix T57776: Error when adding a Torus to the scene.

Not all Object.select_set() cases had been updated to new API... Tsst. ;)

NLA: fix frame mapping applied twice keyframing from graph/action editors.

The insert_keyframe function already applies NLA strip to action
time remapping, so doing it in insert_graph_keys/insert_action_keys
is redundant outside the code path that inserts directly into fcurve.

Merge branch 'master' into blender2.8

PyAPI: update keyword list

GP: Change Thickness Text

GP: Add brush parameter to Shapes tools

Need the brush to define thickness and color of the primitive (line, box, circle)

GP: Fix mouse cursor problems

In some situations the check of the windows got false positives and the cursor was hidden by error.

Dirty flags for follicle customdata.

Fix (unreported) crash when deleting collection in freshly duplicated scene.

From startup .blend, add a 'full copy' new scene, and delete its
Collection 1.001 collection. That would make blender crash, once again
due to NULL collection pointer in some ChildrenCollection struct...

Runtime struct for non-serialized hair data, similar to Mesh runtime.

Add customdata for hair follicles.

GP: Reorganize Drawing Plane options

GP: Keep synchronized layer list in top bar

Now when the layer is changed, the list of layers and the topbar selector keep equal.

GP: Autolock layers was not working with dopesheet

Also fixed a delayed update of the panels