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

[Andrew Cagney]

New commits:
commit c0912f098d1fdf0e06242b7edc97c3b05f44d778
Author: Andrew Cagney <cagney at gnu.org>
Date:   Tue Jan 8 10:57:06 2019 -0500

    building: don't use __VA_OPT__(,), seems to be too new for some compilers