[Swan-commit] Changes to ref refs/heads/main

[Andrew Cagney]

New commits:
commit 4891f1cb1b7a9791b5952b268326dd0671df8cfc
Author: Andrew Cagney <cagney at gnu.org>
Date:   Wed Jun 9 14:22:03 2021 -0400

    refcnt: merge add_ref() and refcnt_addref() into addref() et.al.