hdf5

Merge pull request #1939 in HDFFV/hdf5 from ~DEROBINS/hdf5_der:develop_minor_pr to develop

* commit '6eb506eff76b5455f8aac8889c6809aca2d8be52':
  Revert "Moved NDEBUG guards to H5EA_DEBUG in H5EA package."
  Revert "Fix for H5EA debug package when built in release mode."