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

[D. Hugh Redelmeier]

New commits:
commit 0be89023363b53c7add2225d01e7a289933d91b4
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Wed Nov 22 14:54:06 2017 -0500

    pluto: tidy refine_host_connection and friends