[getdns-api] call_debugging extension

[Daniel Kahn Gillmor]

Hi Sara--

this all sounds reasonable to me, except:

On Fri 2015-11-13 10:52:24 -0500, Sara Dickinson wrote:
> run_time (a bindata) is the difference between the time the successful
> query started and ended in milliseconds since the epoch, represented
> as a uint32_t (this does not include time taken for connection set up
> or transport fallback)

I think you can remove "since the epoch" here.

It seems possible that users might want to also measure transport
fallback or connection setup, but we should be able to add that
information to the dict in future revisions if we get requests for it.

  --dkg