[PATCH 0/6] Bugfixes

[Ian Jackson]

A bugfix which is going to become quite relevant when users want to
upgrade to the IPv6-capable version of secnet, because that version
will depend on a different ipaddr library:

 1/6 make-secnet-sites: Put our path component at the beginning

A build bugfix:

 2/6 test-example: Provide clean target in Makefile

Minor bugfixes to peer public address selection, particularly for
mobile sites:

 3/6 site: transport peers: Break out transport_resolve_complete,_tardy
 4/6 site: transport_peers: Rename incoming_packet_addr
 5/6 site: transport peers: MSG1: use transport_compute_setupinit_peers
 6/6 site: transport peers: Use source of NAK packets as reply address

I intend to release these as 0.3.3 fairly soon.