Blender Git Loki

Curve: Concluded the implementation of the Extend operator

This commit contains the full implementation of the Extend operator, plus helper functions.

Moved old bvm codegen and function files into bvm module.

The intern and compile modules are now truly independent from backends (llvm and bvm).

Merge branch 'master' into soc-2016-pbvh-painting

Forgot to free stroke cache. Something isn't quite right with vert to loop freeing...

Added blur, although I might rename this tool as smudge and make a seperate blur tool.

Custom layer property support

first attempts to add silhouette brush

Expose LayerTree and LayerTreeItem in RNA

Will be used for custom property support.

fixed memory leak (liquid mesh was copied but not freed)

temporary fix for viewport tranparency (additional density grid in liquid sim)

fix for gzopen: added missing cast (void* -> gzfile)

small gzfile fix: declare file variable before using it and use const file name

Fixed a bug that was preventing me from implementing the blur functionality. Should have blur working in 24 hours.

clean up in elbeem fluid code: removed some early tests (not needed since manta liquids are in smoke modifier)

Refactor of the node graph compiler class, to have a backend-agnostic base.

The main compiler class is now itself independent of LLVM and can be used for
future backends. The implementation of specific behavior (values, statements, etc.)
happens through a CodeGenerator implementation. This also uses aggregation rather
than inheritance on the compiler class part (which is not a virtual class itself).

Merge branch 'master' into soc-2016-pbvh-painting

Did a little cleanup. Noticed I

Add float to half conversion code, which can be used on CPU to convert float textures slots to half.

Still need to hook these up with actual Image Manager.

Merge branch 'master' into soc-2016-layer_manager

Cleanup: style.