moved allocator logic into Block class
removed unused GlobalAllocator class
using highest address bit as tree barrier
merging bvh4 and bvh4mb
moved bvh4mb_builder to bvh4
extended bvh4_intersector1 to support motion blur geometry
added motion blur node support to bvh4_intersector8_chunk
added motion blur node support to bvh4_intersector8_chunk
added motion blur node support to bvh4_intersector4_chunk
added motion blur support to bvh4_intersector8_hybrid
added motion blur support to bvh4_intersector4_hybrid, traversal got even faster as SWITCH_DURING_DOWNTRAVERSAL is now also supported
more updates to merged BVH4/BVH4MB
updates, merged bvh4/bvh4mb not yet working
added missing files