Blender Git Loki

Fix T56293: Particle Instance Modifier Axis Buttons UX.

Those axis buttons indeed affect instances orientation even when Create
Along Path is not defined...

deplibs: disable functions that can be found on 10.13 sdk but aren't available on 10.9 target

Cleanup: Remove debug print

Cleanup GP instance: Remove element 0 because is duplicated

deplibs: python use pkg-config from homebrew for ssl + xz

deplibs: get freetype tar.gz rather than zip to get unix line endings

deplibs: let cmake do normal install on webp

build_environment: python 3.7.0 + numpy 1.15.0

Outliner: use generic WM drag and drop system for collections.

* Drag and drop between multiple outliners now works.
* Dragging the icon and text now give the same results.
* Fixes various crashes.

WM: internal changes to support dragging multiple IDs.

To be used by the outliner.

WM: pass on wmDrag to drop operators, so they can get the data directly.

Currently drop operators work mostly by specifying the name of the datablock.
However there can be datablocks with the same name in different libraries, so
this gives wrong results in some cases.

Currently only outliner drop operators have been updated to use this mechanism.

WM: drag and drop poll functions can now specify a custom tooltip.

Cleanup: decouple outliner tree element icon retrieving from drawing.

Cleanup: move most outliner drag & drop code into one file.

update image libraries, D3005 with few mods

build_environment: remove unneeded boost patch on windows.

Submodule commit generated by git tool

This commit des not change nothing only is required by visual studio git tool

Cleanup: Remove unused param

GPUMaterial: Fix color ramp node with constant interpolation

Color ramp with constant interpolation must bypass texture filtering and
use nearest neighboor sampling in order to appear correctly sharp.

This patch use a GLSL hack to use nearest sampling on thoses particular
color band.

Eevee: Fix assert with object volume rendering