hdf5

Merging in latest from upstream (HDFFV/hdf5:refs/heads/develop)

* commit '47f30b474bdc498c20bd6d2a0ba7e8947ab389f0':
  HDFFV-10608 Move toolchain files into a subfolder
  TRILAB-36 add option for test script batch command
  Fixed warnings in the VOL example and run it from the script.
  Split H5VLnative.h into public and private files and updated