2 - Bring the logic that gathers routerinfos and assesses the
3 acceptability of circuits into line. This prevents a Tor OP from getting
4 locked in a cycle of choosing its local OR as an exit for a path (due to
5 a .exit request) and then rejecting the circuit because its OR is not
6 listed yet. Also prevent Tor clients from using an OR running in the same
7 instance as an exit (due to a .exit request) if the OR does not meet the
8 same requirements expected of an OR running elsewhere.
9 Fixes bug 1859; bugfix on 0.2.0-alpha.