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

[Andrew Cagney]

New commits:
commit 1aa77cbf74912e59062f417d3b6462fc5fe20ee3
Author: Andrew Cagney <cagney at gnu.org>
Date:   Tue Sep 3 12:21:12 2019 -0400

    ip: delete goodmask(), masktobits(), mask6tobits(); unused