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

[Andrew Cagney]

New commits:
commit ec43c7323bf06f6a99a44469d2fb0b6220958e44
Author: Andrew Cagney <cagney at gnu.org>
Date:   Wed Dec 20 11:29:25 2017 -0500

    state: replace "tricky" code with monotimediff()
    
    "tricky: in case time_t/monotime_t is an unsigned type"
    (lets assume monotimediff() works).