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

[D. Hugh Redelmeier]

New commits:
commit fab939db9d66c6ba1a544d2c94865234a864b949
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Fri Jul 20 10:15:19 2018 -0400

    testing: slightly better hint if user failed to add self the qemu group