Blender Git Loki

OpenSubdiv: Completely disable topology verification

Previously it was enabled for debug builds, now it is to be enabled
explicitly.

The reason for this is to reduce overhead when debugging other areas
which might involve subdivision surface. When conversion is to be
debugged set this manually in the code.

OpenSubdiv: Refactor, move evaluator to own folder

OpenSubdiv: Cleanup, move utility function to base type conversion

OpenSubdiv: Refactor, move edge map to base folder

OpenSubdiv: Refactor, move topology refiner to own folder

In the future factory will also be moved there.

OpenSubdiv: Cleanup, use C++ range based loop

Avoid indirection via define.

OpenSubdiv: Refactor, use C++ allocation for internal classes

Only use OBJECT_GUARDED_{NEW. DELETE} for structures which are part of
public C-API (and hence can not have new/delete operators overloaded).

Could try being brave and override new/delete from under C++ ifdef.

OpenSubdiv: Refactor, move base C-API file to base folder

OpenSubdiv: Refactor, move type conversion to base fodler

OpenSubdiv: Refactor, move utils to base

Also split them across utilities and types.

OpenSubdiv: Refactor, move device specific code to own files

Also, move all device files to own folder.

Makes it so checks for device availability are done in a localized
place.