message: Add back in the mpi libs to OSPRAY_LIBRARIES if MPI was enabled
  This got removed or lost for some reason in some commit?
diff: @@ -202,6 +202,14 @@ set(OSPRAY_LIBRARIES
  ${OSPRAY_COMMON_LIBRARY}
  )
  +if(OSPRAY_MPI_ENABLED)
  + set(OSPRAY_LIBRARIES
  + ${OSPRAY_LIBRARIES}
  + ${LIBRARY_PATH_PREFIX}ospray_mpi_common${LIBRARY_SUFFIX}
  + ${LIBRARY_PATH_PREFIX}ospray_mpi_maml${LIBRARY_SUFFIX}
  + )
  +endif()
  +
  # Reset CMake module path to its state when this script was called.
  set(CMAKE_MODULE_PATH ${OSPRAY_CALLERS_CMAKE_MODULE_PATH})
  