hdf5

Merge pull request #2557 in HDFFV/hdf5 from alloc_0sized_dset_fix to develop

* commit 'deadf2546561caa01537334dbb209e60c28d26c5':
  Align contents of CMake and autotools testfile cleanup lists.
  Avoid allocating a chunk index for datasets with 0-sized dimensions, until the dataset is extended.