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

[Andrew Cagney]

New commits:
commit a2f60de94e7368945928f69209eeb479e83d3006
Author: Andrew Cagney <cagney at gnu.org>
Date:   Fri Apr 26 12:39:23 2019 -0400

    events: replace pluto_event_add() with simpler add_fd_read_event_handler() since that is its only use