Commits
Merging in latest from upstream (HDFFV/hdf5:refs/heads/develop) * commit '9ee8c599d7b8cd495efb28cd9f068192712ae086': More fixes for previous committed PR #2079 dated Dec 5 2019. (1) H5O_dtype_ver_bounds[] for V112 should be H5O_DTYPE_VRESION_4 (2) The tests for the new reference types should work for V112 and beyond