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

[D. Hugh Redelmeier]

New commits:
commit 3ecd976f99d0f8f257e269d68cf4d98ebeac42b6
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Tue Oct 31 23:59:29 2017 -0400

    library: make structure of ipstr_buf opaque: only ipstr may access it
    
    This is continuation 6038cb283b00e7244d5e1446fb0c9a95402cc1d3.