message: adding box4f to ospcommon
diff: @@ -117,6 +117,7 @@ namespace ospcommon {
  typedef box_t<int32_t,2> box2i;
  typedef box_t<int32_t,3> box3i;
  typedef box_t<float,3> box3f;
  + typedef box_t<float,4> box4f;
  typedef box_t<float,3,1> box3fa;
  // typedef box_t<vec2i> box2i;
  