[tor-relays] BWauth's / TorFlow seem better

Over the last week it seems to me that some improvement has gone into TorFlow and the BWauths are performing better. In particular the weightings calculated by each BWauth have stabilized and become less erratic. Several relays in the same region of a large network as my relay are now showing a roughly matching pattern of ascending measures, from smallest to largest: longclaw, gabelmoo, maatuska, moria1. One would expect this but it was not true in the past.

One fast relay I watch, 'pixelminer' had a tendency to be yanked from one extreme to another (e.g. 10k to 120k and back) and now has a placid consensus running in the middle of the range (still apparent in the {presumably stabilized} component values).