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

[D. Hugh Redelmeier]

New commits:
commit 91f7de765cefc33bd8685b6d69d31db64462e4c5
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Sat Apr 21 19:28:38 2018 -0400

    eliminate scattered and redundant #includes of <stdbool.h>

commit 8868fd661759028b6576584a3996081cc28c8e61
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Sat Apr 21 19:27:42 2018 -0400

    c-swan: make functions file-static where appropriate