Fix OpenGL error on cycles rendered viewport.

We queried the wrong value when looking for the bound 2D texture. This
is not totally robust because currently bound texture may not be a 2D
one, but this should work for now.
OSX: fsmenu cleanup
glutil: use ints for drawing functions

shorts would wrap sometimes & many inputs were ints already.
Fix T42145: EditMesh Bevel tools had no clamping option.

Missing feature already present in Bevel modifier, useful and rather simple to add.
Operator to define render border from rendered image editor

This way it is possible to define render border directly from the image editor,
which is useful for at least three things:

- If viewport is really optimized out (simplified etc) then it might be hard to
  guess which exact area you're mainly interested now.

- No need to switch to the viewport to do render border tweaks, could be useful
  when doing compositing.

- If one need to look at particular pixel(s) which is real handy for debugging
  render engines (both Cycles and BI).

Reviewers: campbellbarton, venomgfx

Reviewed By: venomgfx

Differential Revision: https://developer.blender.org/D820
Select Random in Particle Edit Mode, by jezv

Added the select random functionality in particle edit mode for hairs or control points.

Reviewers: campbellbarton, lukastoenne

Reviewed By: lukastoenne

Subscribers: campbellbarton, kevindietrich, jezv

Projects: #quick_hacks, #bf_blender, #physics

Maniphest Tasks: T37873

Differential Revision: https://developer.blender.org/D809
D801: Freestyle: remove old and unused stroke shaders

This patch removes several stroke shaders written in C++ that are unused
and don't serve a real purpose any more.  The removed shaders are:

  - BPy_ColorVariationPatternShader
  - BPy_StrokeTextureShader
  - BPy_TextureAssignerShader
  - BPy_ThicknessVariationPatternShader
  - BPy_fstreamShader
  - BPy_streamShader

and a few more that weren't even exposed to the Python API.

Some minor edits were made by the reviewer.

Differential Revision: https://developer.blender.org/D801

Reviewed by: kjym3
Freestyle: silence a GCC warning (-Wunused-function).
Implement custom names for render slots

Basically the title tells it all, quite straightforward implementation.

The only thing is the image.render_slot which used to represent the active
render slot index is now moved to image.render_slots.active_index.

Reviewers: venomgfx, campbellbarton

Differential Revision: https://developer.blender.org/D821
Libmv: Update Ceres to latest upstream

just to be sure we're dealing with the latest git version when troubleshooting
one annoying OSX issue..
Cycles: Remove redundant float4->float3 conversion

Not as if it gives noticeable changes render-time, but it's just weird to
convert float4 to float 3 to just access individual x/y/z components.

Plus some compilers might be more stupid than GCC and don't optimize this
out well.
InstallDeps: Fix wrong OPENCOLLADA settings in final messages in some cases.

Reported by Jefferson Rausseo through mail, thanks.
Fix T42139, vertical noise stripe patterns in noise texture.

Two fixes here (only the second one is strictly needed to fix the issue,
but both make the system better).

First is introduction of a random generator array for use with threaded
systems where each thread needs to access its own number generator.
The random texture now uses this so it should not be influenced by other
random generator reseedings of the main random generator like it did
before.

Second, I reshuffled the texture code to resample the upper bits of the
random number first. According to Numerical Recipes, this is where the
most variance can be found, so by sampling those we avoid correlation
issues. Also, multiplying here is not ideal because if a pair of bits
are zero, then the whole result will also be zero.

Overall this is much more random (tm) than before, however result will
also be brighter, since we now have less black spots. Tweaking the
brightness/contrast should somewhat fix that, generally having the same
result as before is not possible anyway if we are to really fix this.

Also, seems like exposing procedural depth might be nice here since it
influences the precision of the texture lookup.
Classic blenderplayer fix + small optimization
Minor cleanup.

* Use pie direction, not draw type for pie item collision
* Strict function definitions.
* Initialize random array with system time
Sculpt: use bitmap for mask bool array
Cleanup: tabs

Set your editor to tabs for all C/C++!
Fix T41639, hierarchical pie menu - popup interaction is buggy.

Basically, this commit changes pie menu click interaction so that
confirmation is done on left click release instead of press. This allows
dragging on the pie menu to select different items, but most
importantly, there should be no left over click events passed on to
subsequent menus/pies. This means that pie menus should now be able to
spawn popups safely. Also, left clicking to spawn a second pie menu now
sets that menu to click style by default allowing for better interaction
between hierarhies of pie menus.
Enable atomic peak memory detection

This gives more precise information about memory usage which might be real handy
when doing memory optimization.

It works good here for as long as i can tell but if for some reason you'll be
experiencing some weird slowdown please let me know.
Code cleanup: Use generic isnan() function instead of own ifdef