forward-port recent releases

      two parallel lists in lockstep.

Changes in version 0.2.0.25-rc - 2008-04-23

  Tor 0.2.0.25-rc makes Tor work again on OS X and certain BSDs.

  o Major bugfixes:

    - Remember to initialize threading before initializing logging.

      Otherwise, many BSD-family implementations will crash hard on

      startup. Fixes bug 671. Bugfix on 0.2.0.24-rc.

  o Minor bugfixes:

    - Authorities correctly free policies on bad servers on

      exit. Fixes bug 672. Bugfix on 0.2.0.x.

Changes in version 0.2.0.24-rc - 2008-04-22

  Tor 0.2.0.24-rc adds dizum (run by Alex de Joode) as the new sixth

  v3 directory authority, makes relays with dynamic IP addresses and no

  DirPort notice more quickly when their IP address changes, fixes a few

  rare crashes and memory leaks, and fixes a few other miscellaneous bugs.

  o New directory authorities:

    - Take lefkada out of the list of v3 directory authorities, since

      it has been down for months.

    - Set up dizum (run by Alex de Joode) as the new sixth v3 directory

      authority.

  o Major bugfixes:

    - Detect address changes more quickly on non-directory mirror

      relays. Bugfix on 0.2.0.18-alpha; fixes bug 652.

  o Minor features (security):

    - Reject requests for reverse-dns lookup of names that are in

      a private address space. Patch from lodger.

    - Non-exit relays no longer allow DNS requests. Fixes bug 619. Patch

      from lodger.

  o Minor bugfixes (crashes):

    - Avoid a rare assert that can trigger when Tor doesn't have much

      directory information yet and it tries to fetch a v2 hidden

      service descriptor. Fixes bug 651, reported by nwf.

    - Initialize log mutex before initializing dmalloc. Otherwise,

      running with dmalloc would crash. Bugfix on 0.2.0.x-alpha.

    - Use recursive pthread mutexes in order to avoid deadlock when

      logging debug-level messages to a controller. Bug spotted by nwf,

      bugfix on 0.2.0.16-alpha.

  o Minor bugfixes (resource management):

    - Keep address policies from leaking memory: start their refcount

      at 1, not 2. Bugfix on 0.2.0.16-alpha.

    - Free authority certificates on exit, so they don't look like memory

      leaks. Bugfix on 0.2.0.19-alpha.

    - Free static hashtables for policy maps and for TLS connections on

      shutdown, so they don't look like memory leaks. Bugfix on 0.2.0.x.

    - Avoid allocating extra space when computing consensuses on 64-bit

      platforms. Bug spotted by aakova.

  o Minor bugfixes (misc):

    - Do not read the configuration file when we've only been told to

      generate a password hash. Fixes bug 643. Bugfix on 0.0.9pre5. Fix

      based on patch from Sebastian Hahn.

    - Exit relays that are used as a client can now reach themselves

      using the .exit notation, rather than just launching an infinite

      pile of circuits. Fixes bug 641. Reported by Sebastian Hahn.

    - When attempting to open a logfile fails, tell us why.

    - Fix a dumb bug that was preventing us from knowing that we should

      preemptively build circuits to handle expected directory requests.

      Fixes bug 660. Bugfix on 0.1.2.x.

    - Warn less verbosely about clock skew from netinfo cells from

      untrusted sources. Fixes bug 663.

    - Make controller stream events for DNS requests more consistent,

      by adding "new stream" events for DNS requests, and removing

      spurious "stream closed" events" for cached reverse resolves.

      Patch from mwenge. Fixes bug 646.

    - Correctly notify one-hop connections when a circuit build has

      failed. Possible fix for bug 669. Found by lodger.

Changes in version 0.2.0.23-rc - 2008-03-24

  Tor 0.2.0.23-rc is the fourth release candidate for the 0.2.0 series. It

  makes bootstrapping faster if the first directory mirror you contact