Blender Git Loki

startup: default file selector to a useful path

Was initialized to '/home/', use BKE_appdir_folder_default instead.

Fix action-zones showing up as shortcuts

Toggle fullscreen area for eg, was showing the action-zone instead of
the key binding.

Keymap: refactor keymap item find logic

Pass a function to filter items to allow lookups to be more selective.

Fix T59170: Box select ignores modifiers-keys once tool option is set

- Key-map items properties now override tool-options
so modifier keys can have different behavior to the default action.

- Box & circle select now have `wait_for_input` properties
instead of detecting this based on selection options being set or not.
This relied on the key-map setting properties which may need to be
initialize from the tool settings.

Merge branch 'master' into blender2.8

Cleanup: use colon separator after parameter

Helps separate variable names from descriptive text.
Was already used in some parts of the code,
double space and dashes were used elsewhere.

GP: Primitives: Adjust control point styles

Docs: correct doxy comments

GP: Change Circle primitive control points

Changed to small red style.

GP: Editable Arc tool

Arc tool is now editable like the Curve tool.
Unlike the curve (bezier) tool this uses an elliptical function.
Remove flip option as it is no longer needed.

Keymap: add Shift-F1..3 editor shortcuts

Some frequently used editors didn't have F-key access.

Fix T59211: Edit-mesh display crashes

Caused by ae1f563899de4

Fix Cycles baking active/cage

Basically what we address here is to make sure the active object and the cage
are not interferring with the baking result (e.g., when baking Combined).

To do so, we take advantage of the fact that we create our own depsgraph
for baking. So now we can change the cowed objects, instead of the
original ones.

Note: There is still a way to get a crash. If you try to bake from
selected to active when is_cage, but with no cage object, we get an
assert:

```
BLI_assert failed: //source/blender/blenkernel/intern/DerivedMesh.c
mesh_calc_modifiers(), at
(((Mesh *)ob->data)->id.tag & LIB_TAG_COPIED_ON_WRITE_EVAL_RESULT) == 0
```

We can bypass this by passing ob_low instead of ob_low_eval to
bake_mesh_new_from_object on object_bake_api.c:847 . But then the edge
split modifier change will take no effect.

Fix T59210: Measure tool crash w/o overlays/gizmos

Fix rulers being removed on click

Revert "Tweak UI message of Ruler tool."

This reverts commit 1bf0a4f4d0d8c7e748f40d634aebf55eb37435ba.

This is a bug, clicks shouldn't remove rulers since it's too easy
to accidentally click instead of dragging.

Fix toolbar key-accelerator w/ LMB select

Tweak events were masking hotkey access.

Reported in T55162

Merge remote-tracking branch 'origin/master' into blender2.8

dependencies windows: Replace pthreads-win32 2.9.1 with pthreads4w 3.0.0

maintenance seems to have stopped for pthreads-win32

GPUState: Change isolated glLineWidth usage to GPU_line_width