[44net] gateways sunset

As many of you know, when we set up the portal and moved the gateways maintenance to it, we imported the legacy gateways file which included a significant number of dormant or abandoned gateway entries. Since then we've requested that people operating gateways "take possession" of them by registering their active gateways. I believe the time has come to flush all the gateway entries which have not been registered -- clearly by now if they're not registered they must be abandoned. So I propose that we use the month of August to get the last of the active gateways registered with the portal, and after the last day of the month we remove all unregistered gateways from the gateways files. What will remain are the gateways that are still active and being operated by somebody. This should make the tunnels routing table a bit smaller. Comments? - Brian