Update to latest version of librfn

Latest change to librfn was 22-Oct-2014.

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
Tidy up the registration of commands.

This improves git "branchability" to get new commands.

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
Switch to improved hotplug approach.

The new approach is better because it requires no external components.

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>
Update librfn to the latest version.

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>