Blender Git Loki

Fix T42662 hide unselected does not reveal selected.

Not sure if this is a bugfix exactly but should help the gooseberry team
with their workflow.

Fix T42660 snapping not working nicely on graph editor.

Basically, get the grid increments and reuse them when snapping. System
is slightly crappy here, we should calculate those factors only once,
but leaving as todo for later.

Fix color tweaking in vertex painting not getting an undo push (would
cause color reset between strokes)

Fix T42647, vertex and weight painting mode do not display solid shaded
when VBOs is off.

SCons: Proper solution for local symbols map

Configuration used to override the link flags, it better restore them
once the configuration is done.

Fix T42638: Roll angle inconsistent flip in edit mode.

Basically, `angle_compat_rad()` was completely broken -
example of result it could produce:

| new angle | compat angle | result
| -0.000000 | 3.141593 | -> 3.141593

... Where 0.0 (or 2 * PI) would be expected!

Cycles: Remove dynamic library helper files

They were only needed for CUDA wrangler. Since we've switched to CUEW
this utility functions are no longer needed.

Cycles: Fix typo on graphiz graph dumper

Bugfix T42661: shortcut "." and "," for changing pivot center don't work on Graph Editor

SCons: Remove duplicate PLATFORM_LINKFLAGS from makesdna and makesrna

Hopefully it'll fix "anonymous version tag cannot be combined with other version"
compilation error.

mathutils.kdtree: fix docstrings

Cleanup: Remove SD_BSDF_GLOSSY flag, unused.

Cleanup: #define -> enums.

Switch to SDL2 on OSX

Fix: Shift-H now works in main graph editor area too

In the process, I've removed the old operator (ANIM_OT_channels_visibility_set)
and folded that option in with the hide operator, to make this consistent
with how this is done in the 3D view and other parts of Blender.

Tweaks to hide/reveal hotkeys for Graph Editor

Now the hotkeys here work in line with what's done for other parts of Blender
* H = Hide selected
* Shift-H = Hide unselected (i.e. old VKEY behaviour)
* Alt-H = Reveal all

Cleanup: name hide/reveal, like rest of operators

Graph Editor: H/Shift-H now hide and unhide selected curves (Gooseberry Request)

Revised the tools for managing which FCurves are visible in the Graph Editor
curves area. Now, there are the following tools in place:
* V (channels region only) = Hide all curves except those in selected channels [OLD]

* H = Hide all selected curves [NEW]
* Shift-H = Show all previously hidden curves [NEW]

I've removed the old operator to toggle visibility status of selected curves,
as it doesn't seem that useful anymore.

Refactor: Move part of vgroup handling code from ED_mesh/object_vgroup.c to BKE_object_deform.

Along with some minor cleanup and simplifications.

Reviewers: campbellbarton

Subscribers: sergey

Differential Revision: https://developer.blender.org/D903

Cycles: Missed some changes in the previous hair motion blur fix

So now cases when object has both hair motion blur and deformation motion blur
vector pass is all correct.

We could get rid of the flag in the future, still need to look deeper into all
the areas trying to find a more clear solution.