[collectd] Wish for notify_syslog plugin

[Trent W. Buck]

While I was writing a custom email notifier, I set it up to run
logger(1) instead of /usr/sbin/sendmail, to avoid spamming myself
during testing.  I noticed that these syslogs ended up in my mail
queue anyway, aggregated hourly by logcheck[0].

I think this is actually more convenient for me, so I'm officially
asking for a plugin that will register a notification handler using
syslog(3).

This is not a high priority, because it's pretty trivial to have a
NotifyExec sh script that calls logger, but doing it in the main
process would be prettier.  (That and I assume this might be useful
for others.)

[0] http://logcheck.org/