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

[Andrew Cagney]

New commits:
commit b9474fb834701ab1ec0f1d3b7e4f6e06e6a58138
Author: Andrew Cagney <cagney at gnu.org>
Date:   Wed Apr 17 12:30:59 2019 -0400

    events: don't assume libevent_global_shutdown()
    
    Missing from version 2.0 of libevent.
    
    Found by Antony, Stephan and Tuomo.