Backport of countermeasures to mitigate denial-of-service
attacks against the Tor network.
Changelog is in:
https://gitweb.torproject.org/tor.git/tree/ChangeLog
None of these fixes appear to be essential for clients, but relays
should upgrade.
Port changes:
* Changed the implementation of 'tor_setuid': now it is done through
the command line argument, instead of the torrc file.
Reported by: Nick Mathewson <nickm@torproject.org> (notification)
Approved by: tcberner (mentor, implicit)
5c3a344f6e