Application authorisations

[James]

<snip>
>
> You would already "leak" a lot of things wrt. your location when using
>  the internet. An application could run in the background, and get all
>  the information necessary to get your location from Internet sources
>  without your knowledge. What we're trying to avoid is making it too easy
>  for applications.
>

We would only ever leak info from the user's ip, but this is an
anomaly because we allow applications to know their hosts ip address.
All that aside, GPS data, or other sources would still be restricted
and they should be. We don't want to design all the geoclue stuff to
leak that inadvertently.