Reduce MaxCircuitDirtiness to 1 minute to avoid reusing the same circuit in edge cases.
Reduce MaxCircuitDirtiness to 1 minute to avoid reusing the same circuit in edge cases.


svn:r19704

meejah/torperf,aaronsw/torperf,mrphs/torperf,aaronsw/torperf,mrphs/torperf,meejah/torperf,meejah/torperf,mrphs/torperf,aaronsw/torperf,meejah/torperf