Currently locator doesn't actually makes use of it cause it only has one
source right now but later we use it to decide which sources to
initialize and which not to.

These methods were removed a while ago.

And use a copy-pasted version of geocode-glib's GeocodeLocation
object instead, so we don't end up duplicating bug fixes in
both projects.

geocode-glib is meant to only do (reverse-)geocoding and all geolocation
code belongs to us.

This means we now drop our geocode-glib dep and instead directly depend
on:

json-glib-1.0 >= 0.14
libsoup-2.4
geoip (Only needed by geoip server)

This class will be responsible for doing the actual geolocating. As a
starter, it makes use of the IP-based geolocation API of geocode-glib.

Perhaps we should move the appr. API from geocode-glib to geoclue in
near future.