Blender Git Loki

Merge branch 'master' into property-search-ui

Merge branch 'greasepencil-edit-curve' into soc-2020-greasepencil-curve

Merge branch 'master' into soc-2020-info-editor

Custom Menus: Add Pie menu

Revert "Custom Menus: Add Pie menu"

This reverts commit fe0e9900d5811a2d4d018ec24fedc139d21d9de6.

Cleanup: simplified conditionals, remove warnings on linux

Use unsigned int to avoid any range issues.
Remove trailing whitespaces in face elements.
Remove `== false` from conditionals.

Fix T77460: Easy to create cyclic dependencies in collections and crash Blender.

Cyclic check was not checking for collections instanciated by objects...

Fix crash when opening some old/broken .blend files after recent fix.

Now that `BKE_main_collections_parent_relations_rebuild()` is called
from readfile code, we need to make it resilient to potential NULL
master collection pointer in scenes.

Fix (unreported) critical mistake in Collection liblink code in readfile.c.

Prelimenary step to fix T77460.

Not sure how or when that thing was done, but since that call walks
around collections relationships, it's an utterly critical violation of
liblinking principles (code here should never, ever 'get outside' of its
own ID scope).

This was wroking so far only because code called through this function
(`BKE_collection_parent_relations_rebuild`) was only following parents
pointers (in `BKE_collection_find_cycle()`), which would be either valid
or non-existent.

But next commit is going to change that to also check collection's
objects instancing of other collections.

Use unique_ptr to avoid early destruction of new meshes.

Fix T78172: Undo crash due to IDTemplate operations missing undo push.

This should be included in 2.83 as well.

Sanitize pointer on startup

fixes startup issues

Add todo

Fixes for memory management

Cleanup: AT was redundant in the destructor debug

Remove redundant call to OBJMesh destructor.

Cleanup: rename left column to mode column

gauss seidel solver

Outliner: Autoscroll on drag and drop

Scroll the view when dragging elements near the borders. This works in
all 4 directions. Uses the VIEW2D_OT_edge_pan operator.

Merge branch 'master' into soc-2020-outliner