Blender Git Loki

Correct error in last commit

Icons: rename gpencil

Icons: update to r62155

- Tweaked GP toolbar icons and added Line, Rectangle & Circle.
- Added the remaining toolbar icons for all our paint & sculpt modes.
- Made all the toolbar icons the same simple style.

Cleanup: de-duplicate poll function

Tool System: add grease pencil primitive tool

UI: Decrease the fade in/out time of regions with region overlap on.

UI: tweak object type active state

The state of the objects visibility should only impact
the 'active' display of the select icon, not it's self.

Cleanup: use proportional edit template for keymap

Cleanup: use tuple instead of dict

This just loops over pairs so no mapping is needed.

UI: Tweaks to Object Types Visibility popover.

Replace checkbox for visibility with eye icon instead.
Thanks a.monti and zebus3d for the help.

Closes T57714
Part of UI Paper Cuts T56950

Cleanup: de-duplicate keymap items

UI: Name added LightProbe objects after their type.

Just like Light objects do.

Thanks ThinkingPolygons from DevTalk forums for suggesting this!

See T56950

readme: remove 'game creation'.

Merge branch 'master' into blender2.8

readme: use name 'macOS'

Keymap: skip loading the keymap preset in background mode

Caused a crash on exit and isn't needed.

Keymap: move builtin keymaps from C to Python

This should be purely an implementation change,
for end users there should be no functional difference.

The entire key configuration is in one file with ~5000 lines of code.
Mostly avoiding code duplication and preserve comments and utility
functions from the C code.
It's a bit long but for searching and editing it's also convenient to
have it all in one file.

Notes:

- Actual keymap is shared by blender / blender_legacy
and stored in `keymap_data/blender_default.py`

This only generates JSON-like data to be passed into
`keyconfig_import_from_data`, allowing other presets to load and
manipulate the default keymap.

- Each preset defines 'keyconfig_data'
which can be shared between presets.

- Some of the utility functions for generating keymap items still
need to be ported over to Python.

- Some keymap items can be made into loops (marked as TODO).

See: D3907

Mantaflow: Update for new outflow flag

Trigger outflow object allocation when active outflow objects present in scene

Mantaflow: Updated entire smoke.c code

Big customizations to make old smoke.c work with smoke and liquids

Mantaflow: Updated types for outflow

Added new flag for active outflow