started extracting box tests
enabling hidden flags for TaskScheduler, otherwise renderer does not work
moved children pointers to beginning of node
extracted ray/box test out of bvh4_intersector1
extracted ray/box test out of bvh4_intersector4/8_hybrid
extracted ray/box test out of bvh4_intersector4/8_chunk
extracted ray/box test out of bvh4_intersector4/8_hybrid
bugfix in bandwidth benchmark