Add log message to exit signal handler

I've seen a few instances where corosync has shut down for
apparently 'no reason'. In fact most of the time the shutdown
has been caused by an external source (often an init script)
but it's not been obvious what has happened and people
implicate the deamon

This patch simply adds a log message to the signal handler
when it is called so that the cause of the shutdown is obvious.

Signed-off-by: Christine Caulfield <ccaulfie@redhat.com>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>
[PATCH] Replace freopen with open/dup2 when daemonizing

This patch replaces the existing freopen method of
forcing stdin/out/err to /dev/null with the more
usual system of open/dup2.

While I don't like posting patches I don't fully understand,
this patch seems to fix a problem where stdout/err get
assigned to a socket causing double logging output
on systemd.

Signed-off-by: Christine Caulfield <ccaulfie@redhat.com>
Reviewed-by: Jan Friesse <jfriesse@redhat.com>
icmap: Add func to test equality of two key values

Signed-off-by: Jan Friesse <jfriesse@redhat.com>
Reviewed-by: Christine Caulfield <ccaulfie@redhat.com>
Merge branch 'master' into topic-reload