Commits
Merging in latest from upstream (HDFFV/hdf5:refs/heads/develop) * commit 'f2da47f732ded55837f6d008af46d0c448bec1f1': Update to new callbacks in H5VL_class_t.
Merging in latest from upstream (HDFFV/hdf5:refs/heads/develop) * commit 'f2da47f732ded55837f6d008af46d0c448bec1f1': Update to new callbacks in H5VL_class_t.