Blender Git Loki

Docs: add initial idprop.types API docs

Docs: simplify EXCLUDE_MODULES handling

Cleanup: capitalize Blender & Python

simplify redundant conditionals

The redundant terms were harmless but check an expression we already
know to be true (from earlier in the same conditional).

Found by PVS-Studio T48917

Improve description for use_self py-driver option

Curve Fitting: circular fit could give NAN handles

Fitting lines that exactly double back on themselves could give NAN length handles.

Cleanup: rename btree (incorrect & confusing)

Py-Driver: re-use self PyObject when its unchanged.

Py-Driver: use intern strings

Avoids managing strings inline

Fix for previous commit changing the addons submodule.

Cycles: refactor kernel closure storage to use structs per closure type.

Reviewed By: dingto, sergey

Differential Revision: https://developer.blender.org/D2127

Cycles: constant fold add/mul type nodes with known 0 and 1 arguments.

These values often either turn the node into a no-op, or even make it
evaluate to 0 no matter what the other input value is, thus allowing
deletion of a branch of the node graph that otherwise is not constant.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D2085

Cycles: constant folding for RGB/Vector Curves and Color Ramp.

These are complex nodes, and it's conceivable they may end up constant
in some circumstances within node groups, so folding support is useful.

Reviewed By: brecht

Differential Revision: https://developer.blender.org/D2084

Fix Cycles OpenCL compile error on Windows.

Fix Cycles OpenCL not always allocating enough space for closures.

Fix CUDA warning, due to extra ; at the line ending.

Cycles OpenCL: use #line directives for better error messages.

Cycles OpenCL: detect incorrect usage of SOA members in the split kernel.

Fix Cycles OpenCL address space compile error with amdgpu-pro drivers on Linux.

Cleanup: pep8