Blender Git Loki

Cleanup: doxy groups for screen_ops.c

Merge branch 'master' into blender2.8

Fix screen split preview refresh issues

Switching direction didn't refresh, also cursors were flipped.

Manipulator: tweak shape drawing

Draw triangles over wire for a more subtle outline.

GPU_batch: Add GPU_batch_wire_from_poly_2d_encoded

Draws wire around polygon shapes:
better visibility w/ any background color.

Fix collections names no longer unique when moved around

We were not checking for uniqueness after moving. And in some cases the new
siblings of our collection may have conflicting names.

Collections: Fix for auto-named children when parent name is MAX_NAME

Reported via IRC by Vuk Garda?evi? (lijenstina).

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

Fixup for integer digits commit

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

Util function to determine number of digits from an integer

Outliner: Remove User Preferences

This was introduced to the outliner when we had no User Preference
window back in 2.5x. Right now it makes no sense to keep this around.

But how about addon user preferences:
* They belong in the user preference window under the addon.

How about the user preferences themselves:
* You find them in the user preference window.

And templates?
* Why are they here in the first place?

After talking to Pablo Vazquez (who in turn poked Sergey Sharybin) we found
it reasonable to get rid of this. If it turns out that we were wrong we
revert this.

As for leaving this exposed as a debug option (as suggested on IRC) I would say
no, please. This end up polluting the code and never cleaned up in the end.
(this was specific talking about templates).

Technical note: I left the functions in outliner still hanging around.
While I used UNUSED_FUNCTION for one of them, for the other one I had to use:
`#if 0` because the function was calling itself, which would fail to build if
I used UNUSED_FUNCTION.

Cycles: Make it more proper check on vectorization flags from DebugFlags

Mimics to checks in system_cpu_support() checks.

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

Outliner Python UI cleanup: remove KEYMAPS

This was removed since 2013 (ef765b360675). It should have been removed back
then from the UI file too.

Outliner: Fix unparenting poll (when drag'n'droping an object)

Cycles: Cleanup, stop using debug flags in system utilities

Debug flags are to be controlling render behavior, nothing to do with low level
system utilities.

it was simple to hack, but logically is wrong. Lets do things where they are
supposed to be done!

Cycles: Remove util_debug include from kernel code

Not sure why it was in there, all the debug flags stuff is to be handled outside
of kernel.

Cycles: Remove unneeded include statements

Also try to move them from headers to implementation files as much as possible.

Outliner: Change All Scenes to Scenes and make it focus on compositing

We have different ways of explore the scene objects, namely View Layer and
Collections. This change let us focus on compositing elements only such as:

* View Layers
** Collections
** Render Passes
* Freestyle
* Grease Pencil?

Not included in this commit is an option to handle filtering of
collections passes, ... Not sure if we would like, though.
Since they are all properly nested under a "Collections" / "Passes"
parent.