This benign informational message has caused confusion with users
several times.  Reword it to try and avoid this.

…nodes

The structure of the packet stays the same, but the descriptive strings
change to allow clearer information.  This is technically an API change,
but is intended to be a minor one - there are no known users of these
strings.

TODO: document the event messages better, so that the exact state
transitions are more well known.

All modern Linux systems have the ephemeral local state directory
created at "/run" - however this is not universal even across just the
supported Linux systems.

Add a configure option to set the location of run dir that is compiled
into the binary.

(See PR n42n#48 and n42n#49)

It turns out that the openwrt systems that I have been using to test my
OpenWRT package builds (All Turris Omnia systems) appears to have had a
vendor patch applied to create a symlink from "/run" to "/var/run".  On
a vanilla OpenWRT system, there is no "/run".  Use the new configure
option to set the correct run dir location.

(Also deal with the OpenWRT auto conf tools being too old to include the
runstatedir option)

(See PR n42n#48, n42n#49)