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

[D. Hugh Redelmeier]

New commits:
commit 284e7dfabc431c982f09fd4f8d5b574a739bbbc0
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Wed Aug 13 02:34:02 2014 -0400

    pluto: change some tests to explicitly compare with NULL