Blender Git Loki

Another round of tweaks to new Preferences

- Removed doubled Cycles Compute Device text
- Moved header placement into menus panel
- Moved Text panel & rna to Interface
- Moved OpenGL Texture panel inside OpenGL panel
- Moved Color Picker Type to from System>Misc to Interface>Menus (eventually it'd be nice to include this option inside the color pickers themselves to make it more useful and discoverable)
- Combined all memory-related preferences (Undo + Console Scrollback + Sequencer Cache) in a Memory panel in System section (avoids needing previous Misc panel)
- Added correct greying out to Files > Auto Run Python Scripts panel
- Added flow layout to Save & Load checkboxes
- Rejiggered some of the Texture preferences to make more logical sense together
- A few other minor adjustments

Merge branch 'master' into userpref_redesign

Fix triangle-point test function for a stupid condition. See comment.

make rendering into a loop to avoid callback stack overflow.

remove INVOKE_DEFAULT for rendering, otherwise still cause trouble on windows.

Cleanup: avoid counting list multiple times

Also simplify selected sequencer length function.

Cleanup: use bool, style

Cycles: restore old sample and material override settings for view layers.

Since there will be no view layer overrides in 2.80, this is needed still.

Fix T57078: Alembic curve import: better check for topology similarity

The old code assumed that if the number of curves was the same, the
entire set of curves would have the same topology (in other words, it
assumed 'same number of curves => same number of vertices for each
curve').

I've added a more thorough check that also considers the number of
vertices in each curve. This still keeps certain assumptions in place
(for example that if the topology is the same, the weights won't change,
which is not necessarily true). However, when the assumption doesn't
hold, at least now Blender doesn't crash any more.

Fix T59164: Run Alembic in background when INVOKE'd

This is similar to what physics baking is doing: invoking the operator
runs a background job, whereas executing blocks. This makes Python
scripts calling the Alembic import/export operators more predictable.

For backwardward compatibility with existing Python code the
`as_background_job` parameter still exists, which overrides the
behaviour chosen by INVOKE/EXECUTE.

Reviewers: brecht

Reviewed by: brecht

Differential revision: https://developer.blender.org/D4137/new/

Docs: update manpage and html with app description matching website.

UI: update Blender application icon on all platforms.

More accurate logo colors, flatter look.

Alembic import: Fix crash with mcol indices out of bounds

Part of T57377

Reviewers: sybren

Maniphest Tasks: T57377

Differential Revision: https://developer.blender.org/D3847

Alembic import: lock interface while importing

This prevents crashes caused by the viewport evaluating the depsgraph while
the import is still running.

Fix T59785: Curve modifier does not update in realtime in object mode

Reviewers: brecht

Maniphest Tasks: T59785

Differential Revision: https://developer.blender.org/D4134

Fix T59526: VSE Add submenus for clips/masks dont show with only one
item

Fix scripts from external editings.

Added one click composition to LANPR.

Sequencer: refactor clipboard copy to no longer increase user count.

The clipboard is not a real user and should not be counted. Only on paste
should the user count increase.

This is part of D3621, and was implemented by Richard Antalik and me.

Fix more issues with recent render passes code cleanup.

Ref D4133.