Since the StatusBarPolicy is run in the System Process and shouldn't therefore call into
the Telephony process we decided to make sure all the needed info was passed along with the
original notifications.
bug: 2173053
This also refactors ConnectivityService a bit towards supporting multiple simultaneous connections by making each a seem like a seperate Network with it's own stateTracker, etc.
Also adds tracking of process death to clean orphaned startUsingNetworkFeature features.
