Blender Git Loki

UI: reorganize render output and encoding panels for single columns.

This will look a bit better once horizontal expanded enums work.

Fix T56667: missing sockets with Cycles render layer nodes in compositing.

Merge branch 'master' into blender2.8

Conflicts:
source/blender/blenkernel/intern/collision.c

ClosthCollision: fully avoid computing BVHTree when we have no collision objects to test against.

Followup to rBc6bbe6c5aac29, much more elegant solution to the problem. ;)

Fix T56423: Fully broken drag'n'drop parenting in Outliner.

`BKE_libblock_find_name()` expects ID names *without* ID type 'prefix'...

Cleanup: Split function up

We would need to at least support one more PBVH building
here, trying to squeeze everything into one function will
make it really hard to read and follow.

Spelling fixes in comments and descriptions, patch by luzpaz.

Differential Revision: https://developer.blender.org/D3668

Fix T56622: crash and other bugs deleting scenes.

Simplify library remapping code to handle special collection/object links
in postprocess. Previously base contained the actual object link which
needed special handling in preprocess, now objects are linked through
collection and the base cache can be updated in postprocess.

Weightpaint mode: Removing barbarian batch tagging on engine init

This was introduced in the original implementation of weightpaint
in 2.8 (20f95de6ba2d). But this is very shortsighted, we can't assume only one
object will be edited at once, nor should we tag things during drawing.

There is a chance this introduces "bugs". If it does, we then tackle them in the
proper way (usually tagging DEG after operators changing the weight paint data).

Topbar: Remove unused variable

Fix T56666: Crash typing "w" in the search function.

One shall check object is a GPencil one, before trying to use ob->data...

Depsgraph: Cleanup, put symbols to a proper namespace

Multi-Object Editing: MESH_OT_bridge_edge_loops by Philippe Bachour

I (Dalai) did a few changes before committing:
* Code style (mostly tabs instead of space).
* Skip loop when no vert selected.
* Keeping comment on why always return FINISHED.

Maniphest Tasks: T54643
https://developer.blender.org/D3338

Fix T56593: Crash when enabling collection with curves

Was missing update of ID blocks which are becoming visible.

Merge branch 'master' into blender2.8

Multi-Objects: OBJECT_OT_vertex_group_smooth

In this case we call the operation multiple times.

Fix (unreported) potentially giant memory leak in Cloth collision solver.

Not freeing its BVHTree in case there were no collision objects,
could quickly lead to hundreds of MB of memleak!

Depsgraph: Use more meaningful name for flags storage

Tool System: add paint brush shortcut

Eevee: Fix missing meshes on Win + Intel HD 530/540

This is only a workaround. The real issue should be adressed by the
driver team upstream.