Blender Git Loki

Added stubs for handling IK constraint eval steps

Fix incorrect old references

Building for Texture stacks

Fleshing out includes - adding all common includes which we're likely to need

Porting over code to clear ID-tags on datablocks which we perform recursive building with

Copying over logic for building world graph from materials

TODO: perhaps there needs to be a base function for performing the
graph building functionality on these types of ID-blocks?

Stub for compositing

Stub for particle-systems stuff

Restore missing brace

Rough port of material graph building

Some more stubs and ported over code for shading-related nodetrees + datablocks

Stub for defining shader-nodes graph

Porting over graph building code for lamps

Separate lamp graph building code to a separate function

Separate camera graph-building code out into a separate function

Support for sequencer in query lookup

Add node types for sequencer - subcomponent of Scene

Sequence strip handling for RNA -> DepsNodes

Stub for graph building of lamp data

Special handling for bones (when doing RNA lookups)