Ok, part 3 covers all the external things location-proxy does other than talk to the GPS hardware (liblas does nothing external except talk to the GPS hardware which we dont care about for this). This will allow you to talk directly to location-proxy if you want and also to replace location-proxy with something that talks to different GPS hardware (such as the one in the Neo900).

location-proxy references the following gconf keys:
/system/nokia/location/supl/server (server name for location SUPL server, this is written with the default value if it doesn't already have a value)
/system/nokia/location/supl/port (port number for location SUPL server)
/system/nokia/location/sim_imsi (this gets set to the SIM IMSI)

location-proxy will also create the file /var/run/location-proxy.pid and store its PID (as ASCII) in it.

It takes the command line parameters --no-detach and --pid-file

More to come tomorrow, covering dbus interfaces and ssl/security/network interfaces to location-proxy as well as all the interfaces to location-daemon and liblocation.