include the new name for the cray auto detection type
include the new name for the cray auto detection type

embree changed the cray isa autodetection type to DEFAULT. This
change restores the old code path to what it was in that
environment.

ospray/OSPRay,wilsonCernWq/ospray,ospray/OSPRay,wilsonCernWq/ospray,wilsonCernWq/ospray,ospray/OSPRay,ospray/OSPRay