Blender Git Loki

Add vertex, curve, and follicle base data layers by default.

New customdata types for base hair curve data.

Merge HairPattern into HairCurveData, no reason to keep these separate any more.

Introduce curve and vertex customdata for hair.

Add 'nomain' hair creation functions for making hair systems.

Remove HairExport usage from draw code.

Depsgraph eval function for hair on object level that computes follicle space.

Make return values for mesh sample eval optional.

Dirty flags for follicle customdata.

Runtime struct for non-serialized hair data, similar to Mesh runtime.

Add customdata for hair follicles.

Fix incorrect segment count when creating hair segment index buffer.

The max size includes one element for primitive restart, but that must not
be included when creating actual indices.

Fix curve data copy function not copying counters.

Simple hair curve generation function for the test operator.

Remove the "bind" flag and function for hair.

This is a remnant of the previous system where actual fibers were always
interpolated from one or more actual curves. Now each follicle simply gets
its own curve.

Merge remote-tracking branch 'origin/blender2.8' into hair_object

Add missing ID base class declaration for HairSystem RNA.

Fix renamed 'percentage' arg in layout splits.

Check for valid scalp before running the test hair operator.

Fix merge error in view3d ui script.