Blender Git Loki

Do not draw fill control lines in multiwindow

If enable the fill control lines, these must be drawn only in the current window.

Cleanup: type conversion warning

Fixed typo Python API

`mathutils.geometry.barycentric_transform` used `tri_a[1-3]` for the
target triangle, but in fact they are `tri_b[1-3]`

Get rid of uiLayout.prop group parameter

Just always use the grouping behavior, that should be fine. Also add colons to
the group title.

Address most minor points from review

* Increase size of settings window again (some sections are too squeezed).
* Use '...' suffix to indicate that menu entry opens new window.
* Stick to current naming convention for area/region variables.
* Simplify tooltip.
* Remove hyphen ("keymap", not "key-map")

Merge branch 'blender2.8' into userpref_redesign

Merge branch 'master' into blender2.8

Fix ugly recursive pattern in RNA PointCache data layout.

PointCache was having a collection of items of PointCache type, having a
collection of items of PointCache type, having...

Nuff said.

For now, chose the 'ugly' way to fix it, that is, the one that changes
nothing to API and scripts using it: we define another 'PointCacheItem'
RNA type for items of our point cache collection, which has exact same
interface as PointCache except for the collection.

This is doomed to be rewritten at some point anyway, not worth spending
time trying to define a really correct data layout for now.

Cleanup: Warnings and Codepage errors

Merge branch 'blender2.8' into greasepencil-object

Enable Loop Onion in Relative mode

CMake: disable boost for lite builds

Cleanup: kdopbvh, only set parent nodes once

Cleanup: use MEM_SAFE_FREE

mathutils: replace interp w/ blend when standalone

build_environment: remove msvc compiler warning from boost.

Even the boost people have given up trying to keep up with the rapid release
of new msvc versions, and have removed the warn for now see: https://github.com/boostorg/config/commit/5ad0730630188b55e2ee554dec53b5498fc0a030#diff-eac863c1d46c77471e54e8818aab7534

MSVC: ignore warning c4828 The file contains a character that is illegal.

The only place this warning is coming from is from comments in headers of 3rd party libs. we can safely repress this warning for now.

Eevee: Volumetrics: Fix crash when using smoke volumes.

DRW: Fix error in texture binding / unbinding.

GWN: Element Buffer: Refactor / Optimisation.

- Upload the data to the GPU directly when creating the element buffer in
GWN_indexbuf_build_in_place().

- Convert data in place when squeezing the indices and removing the need
for another allocation.

- GWN_indexbuf_build_in_place() can be used with already used element
buffers and reupload their data without changing vbo id (keeping vaos
up to date).