hdf5_ep

Merge pull request #42 in HDFFV/hdf5 from ~NFORTNE2/hdf5_nf:talos-0179 to develop

* commit '748d6f318c5ebe4fa7ee5d8e4ca2681d69792b70':
  Change check for number of dimensions for old-style arrays in datatype decoding routine from an assertion to an if/HGOTO_ERROR check, since it is inappropriate to assert the contents of a file will be what we expect.