Code cleanup: for Cycles compatible panels, use exclusion rather than inclusion list.
Code cleanup: for Cycles compatible panels, use exclusion rather than inclusion list.

This shortens the list, and Blender render specific panels are added less often
than other panels anyway, so less chance to miss things.

tangent-opensource/coreBlackbird,tangent-opensource/coreBlackbird,tangent-opensource/coreBlackbird