Blender Git Loki

fix compile error

Merge branch 'master' into cycles_procedural_api

Use custom collection property to pass the asset list to UI lists

`UIList` is designed to use collection properties. I previously did a
whole bunch of hacks to use it without. This isn't acceptable for
master, instead a proper collection property should be provided.

Idea is to let scripts register a custom collection property, that the
asset view template can fill with the latest asset list contents and
pass that to the UI list.

Longer term I'd prefer if the UI code would support other containers,
and not rely so much on RNA and custom/ID properties. I have ideas and
plans for this, but meanwhile, this will do to remove the hacks.

Change offset to use float2

More cleanup of variables

Cleanup in Import and return values

Cleanup return values

Use blender::Vector

Sculpt Expand: Split snap event into two separate events

Remove duplicate Enum items definition

Sculpt Expand: Add Poly Loop Falloff mode

Cleanup const variables

Change Poll methods

Remove comment about context region

Remove redundant void parameter

This is not required in C++

Merge branch 'master' into sculpt-dev

Revert "GPencil: Remove Bezier curve data in Evaluated strokes"

This reverts commit 29ce51a67ebee6d8a9d70465a9f60c9c56e90fdc.

Merge branch 'master' into temp-gpencil-io

Cleanup LineartLine -> LineartEdge

Fix warning about possibly mixed C/C++ linkage of type

Would give a warning:
```
'ED_asset_library_reference_from_enum_value' has C-linkage specified, but
returns incomplete type 'struct AssetLibraryReference' which could be
incompatible with C [-Wreturn-type-c-linkage]
```