Commits
Merge pull request #1425 in HDFFV/hdf5 from ~JHENDERSON/hdf5:develop to develop * commit '659dd9bccf69f32bfdd01dc49410116ec5c1b0bb': Align H5Lcreate_ud behavior with documentation for NULL udata pointer
Merge pull request #1425 in HDFFV/hdf5 from ~JHENDERSON/hdf5:develop to develop * commit '659dd9bccf69f32bfdd01dc49410116ec5c1b0bb': Align H5Lcreate_ud behavior with documentation for NULL udata pointer