Commits
Merging in latest from upstream (HDFFV/hdf5:refs/heads/develop) * commit '8e3b094bad1706b444554cd23591fd1c4431c1f1': Remainder of vol_normalization changes (dataset, attribute, files, objects).
Merging in latest from upstream (HDFFV/hdf5:refs/heads/develop) * commit '8e3b094bad1706b444554cd23591fd1c4431c1f1': Remainder of vol_normalization changes (dataset, attribute, files, objects).