Blender Git Loki

Fix assert in some cases when using DataTransfer modifier for custom normals.

Reported by @sybren on IRC, thanks.

Should be safe for 2.80.

Merge branch 'master' into greasepencil-object

Cleanup: Mesh Batch Cache: Rewrite iterations to prepare for multithreading

[Fast import/export] Fixed segfault on some files

Added alpha output to Vertex Color node. SVM and OSL.

Mesh Batch Cache: Speedup: Move the prev edit edge hack for edit uv...

and move it to the only function that needs it: mesh_edituv_data_iter_edit.

Mesh Batch Cache: Speedup: Remove the need for memset in index buffer init

Instead of setting the whole IBO to restart index, we only set the restart
indices when we encounter a hidden elem.

Cleanup: Mesh Batch Cache: Remove old unused code

Hide header by default in temp-window mode

Also, place it at the bottom, the little triangle to toggle it looks
misplaced at the top.

Show view options in header if visible

Brings back most of the buttons that were previously in the header back
to it. When the header is visible, the filter (or better said display)
popup is hidden.

Also moves display type option into the filter/display popup.

Fix error in previous commit

Add recursion level and display size options to filter popup

Those are the file-list specific options from the area 'View' menu.

Move sorting options into filter popup

Consistent to Outliner filter popup.

Vertical layout for short list display type

Silence GCC warning

Cloth: fix memory leak while finding nearest plane

Cloth: split edges now flips edges for newly created faces

UVEdit: Support Mesh eval cage selection

- Select Vert / Edge / Face support
- TODO : Rect / Lasso / Circle / Loop

Cleanup: Silence warnings

Mesh Batch Cache: Refactor: Fix subdiv UV edge highligh in vert select mode