Blender Git Loki

Merge branch 'master' into object_nodes

Added explicit vector input socket to the procedural texture nodes.

Added graphviz debug output for parsed bvm node graphs.

Cleanup for the texture node compiler API functions.

Removed unused code.

Use an object pointer from the evaluation data, rather than storing just indices.

Pointer type for passing opaque DNA references and the like through the VM.

Moved the conversion of bNodeTree (DNA/pynodes) to python code for simplicity.

This has several advantages over doing the same in C/C++ code:

- The two parts of the code are clearly separate (parsing DNA settings vs. building and evaluating)
- UI constructs with modes, special cases, etc. can be done in py, heavy lifting still happens in C
- Scripters can easily add own nodes without having to deal with internals

Added first procedural texture node (voronoi).

Texture coordinates node.

Invalidate the texture bvm program cache when the Tex datablock is updated.

Start of a texture node replacement using the bvm system.

Staged construction of node graphs from bNodeTrees through a "parser".

This wraps mapping of sockets and links in a nice small API.

Added a float4 type for rgba colors mostly.

Internal support for 4x4 matrices in the bvm types.

Renamed 'effector' data to 'point' data.

More vector math node modes.

Effector closest-point node for mesh-based for fields.

Merge branch 'master' into object_nodes

Added globals as a distinct argument to the eval function.