Commits
Merge pull request #1580 in HDFFV/hdf5 from update_vol_callbacks to develop * commit 'd6663b95ac7e9e378b24bd721ea4403ca98d4adf': Revise "management" VOL callbacks into 'info' and object 'wrap / retrieval' classes.
Merge pull request #1580 in HDFFV/hdf5 from update_vol_callbacks to develop * commit 'd6663b95ac7e9e378b24bd721ea4403ca98d4adf': Revise "management" VOL callbacks into 'info' and object 'wrap / retrieval' classes.