Blender Git Loki

Tests: Disable tests for non-compiled libraries

This diff disables tests for Boolean, subdivision surface and volume
when GMP, Opensubdiv and Openvdb are not compiled respectively.
It also changes the existing file structure and adds sub-folders for
boolean and subdivison tests. The volume folder only has one test and
is as unchanged structure-wise.

Reviewed By: JacquesLucke, LazyDodo

Differential Revision: https://developer.blender.org/D12448