Blender Git Loki

Cleanup/fix from latest coverity report.

Mostly harmless things, though the 'multires' error was a real bug.

Cycles: Remove redundant alloc/free

Seems like a copy paste error.

Libmv: Code cleanup, avoid C11 feature with structure re-definition

Cycles: Code cleanup, proper class vs. struct declaration

Libmv: Code cleanup, mixed class/struct in declaration/definition

Cleanup: Remove unused light function.

Optimize vertex parent for edit mode without modifiers

No need to run lookup on the origindex in this case at all.

Optimize vertex parent in cases there are only deform and SS modifiers

In cases when the subsurf modifier is the last in the stack and there
are only deformation modifiers before it we can skip doing full orig
vertex lookup.

This is rather common situation here in animatic.

SCons: Expose missing command line arguments controlling GLEW

Fix T42349: Windows Render command line Cycles Crash

The issue was caused by GLEW MX enabled in SCons by default so
basically previous commit already fixed the crash. But we need
to be safe here.

For now the fix is simple and not that clean, just check if
there's an OpenGL context available and if not we don't do any
GLSL magic.

This is to be cleaned up after some discussion with the viewport
project guys.

Disable GLEW_MX in scons

This was already disabled in CMake and we need to keep build systems
in 100% synchronized state.

P.S. Would it be a real fix to drop SCons?

Followup to rB154af70f2b5b7b: always 'pack in' ongoing versionning code when bumping version.

Themes auto-update from py script.

Fix T42454: Themes: Some colors were missed somehow in an update two years ago.

Had to fix it by hand (restting them to default values), theme maintainers,
please check your theme from time to time and track such ugly 'pitch black' fields.

And we devs should run theme update script much more often too - will do in next commit!

Fix T42432: Correct BLENDER_SUBVERSION

Bump up BLENDER_SUBVERSION to 2 to allow saving of widget emboss.

Cleanup: naming

Code cleanup: synchronize const qualifiers between declaration and definition

Code cleanup: Remove unused variable

Compositor: Don't let HSV correction to output negative colors

Fix T42391: HSV correction shader node gives negative values

This mainly happens when over-saturating already saturated color.
After some discussion with Campbell and loads of tests we decided
to clamp the result RGB color. As an alternative we might want to
clamp corrected HSV values instead, but that would lead to some
larger changes in the render results.

TODO: The same is to be done for compositor nodes.