Blender Git Loki

DupliObject: Remove unused and confusing index argument from the context

Curve Fitting: Use normalized projection function

Fix T48404: Translate fails w/ snap orientation option

Rotate the object around the snap-target so it meets the snap-point.

Cleanup: unused transform member

Fix T48961: Material slots become easily desynced over linked duplicates.

Own mistake in recent changes (split to test_object_materials()/test_all_objects_materials()).

Fix crash fitting single point curve

Merge branch 'master' into blender2.8

Use COMPAT_ENGINES instead of RenderEngine.use_game_engine for panel poll methods

This mostly affects physics panels. Any engines relying on
RenderEngine.use_game_engine flag to show/hide panels will need to be
updated. The COMPAT_ENGINES technique is how we usually deal with this.
One issue with use_game_engine is that I cannot find a way to set it; it
appears only the BGE can set it. This means (without this commit)
external RenderEngines cannot get rid of the default physics panels.

The RE_GAME flag (the C flag behind use_game_engine) is pretty hacky
and we should look into removing its usage where possible.

Fix T48951: Crash refreshing some popups

Fix for T48874 caused popups to be tagged to be refreshed, that didnt support it.

Tag popups that can't be refreshed.

Add comments on behavior of spacedata and regionbase lists

Fix own mistake from c05363e8895

Didn't know slink->regionbase is removed when area is active. Don't see why this is done, but it's confusing :S

Fix T48790: Cycles render bug with zero strength lights.

Fix crash closing Blender while in rendered local view

Happens because it was always using regionbase of active/visible area, not the correct one of the (possibly inactive) 3D view. Was pretty hidden because you had to be in local view to trigger it.
Could also remove ScrArea * argument from SpaceType.id_remap now, but leaving in there to avoid bigger changes (might also be useful for some case).

Steps to reproduce:
* Default startup.blend
* Enter local view with default cube (/-key)
* Render (or open a different editor where the 3D View is)
* Close Blender - should invoke crash

Fix memory leak when closing Blender with operator popup open

Steps to reproduce:
* Default startup.blend
* RMB-Click on "Cube" item in outliner
* Select Remap Users
* Close Blender using window 'x' button

Fix T48946: Blender+Tahiti+DRI3+Unity+Linux GUI corruption/not rendering

Enable triple buffer by default for AMD cards on opensource driver.

Should be safe now, since it was only old cards causing problems,
which we don't support now most likely anyway.

Avoid creating multiple outputs connected to the same socket when creating a node group

This patch fixes the annoyance that when creating a node group where one of its nodes is connected
to several other nodes, a separate output will be created for each link, even though they're all
connected to the same socket in the group.
Now, before adding an output for an outgoing link, the existing outputs are checked to find whether
any output is already connected to the same socket. If such an output is found, it is reused instead of
creating a new one.

Reviewers: Severin

Subscribers: Blendify

Differential Revision: https://developer.blender.org/D1836

Fix T48061: Crash with adaptive domain and cases when there's no smoke

Fix T48760: Changing Renderlayer Compositor node Layer does not update enabled outputs until script is finished

Cycles: Style, placement of asteric in pointers

Seems we are using `void *` much much more often in Cycles.

Cycles: Some minor tweaks to emission sharder

- Nodification of shader nodes changed default strength from 10 to 1.
If that was intentional, IMO should happen as a separate commit.

- Fixed indentation.