Publish NVIDIA update to NV_gpu_multicast not pushed t (#380)

* Publish NVIDIA update to NV_gpu_multicast not pushed t

  clarify that the interactions with uniform APIs only apply to
  EXT_bindable_uniform (not ARB_uniform_buffer_object).
  optionally allow MulticastCopyBufferSubDataNV with buffers lacking
  per-GPU storage

* Also fix a non-ASCII quote character.
1 file changed