message: add ospray_testing library to CMake find_package() config
diff: @@ -210,6 +210,7 @@ list(REMOVE_DUPLICATES OSPRAY_INCLUDE_DIRS)
  set(OSPRAY_LIBRARY ${LIBRARY_PATH_PREFIX}ospray${LIBRARY_SUFFIX})
  set(OSPRAY_ISPC_DEVICE_LIBRARY ${LIBRARY_PATH_PREFIX}ospray_module_ispc${LIBRARY_SUFFIX})
  set(OSPRAY_COMMON_LIBRARY ${LIBRARY_PATH_PREFIX}ospray_common${LIBRARY_SUFFIX})
  +set(OSPRAY_TESTING_LIBRARY ${LIBRARY_PATH_PREFIX}ospray_testing${LIBRARY_SUFFIX})
  # Set expected OSPRAY_LIBRARIES variable for FindPackage().
  set(OSPRAY_LIBRARIES
  