forward-port the 0.2.9.7-rc changelog

Changes in version 0.3.0.1-alpha - 2016-??-??

Changes in version 0.2.9.7-rc - 2016-12-12

  Tor 0.2.9.7-rc fixes a few small bugs remaining in Tor 0.2.9.6-rc,

  including a few that had prevented tests from passing on

  some platforms.

  o Minor features (geoip):

    - Update geoip and geoip6 to the December 7 2016 Maxmind GeoLite2

      Country database.

  o Minor bugfix (build):

    - The current Git revision when building from a local repository is

      now detected correctly when using git worktrees. Fixes bug 20492;

      bugfix on 0.2.3.9-alpha.

  o Minor bugfixes (directory authority):

    - When computing old Tor protocol line version in protover, we were

      looking at 0.2.7.5 twice instead of a specific case for

      0.2.9.1-alpha. Fixes bug 20810; bugfix on tor-0.2.9.4-alpha.

  o Minor bugfixes (download scheduling):

    - Resolve a "bug" warning when considering a download schedule whose

      delay had approached INT_MAX. Fixes 20875; bugfix on 0.2.9.5-alpha.

  o Minor bugfixes (logging):

    - Downgrade a harmless log message about the

      pending_entry_connections list from "warn" to "info". Mitigates

      bug 19926.

  o Minor bugfixes (memory leak):

    - Fix a small memory leak when receiving AF_UNIX connections on a

      SocksPort. Fixes bug 20716; bugfix on 0.2.6.3-alpha.

    - When moving a signed descriptor object from a source to an

      existing destination, free the allocated memory inside that

      destination object. Fixes bug 20715; bugfix on tor-0.2.8.3-alpha.

  o Minor bugfixes (memory leak, use-after-free, linux seccomp2 sandbox):

    - Fix a memory leak and use-after-free error when removing entries

      from the sandbox's getaddrinfo() cache. Fixes bug 20710; bugfix on

      0.2.5.5-alpha. Patch from "cypherpunks".

  o Minor bugfixes (portability):

    - Use the correct spelling of MAC_OS_X_VERSION_10_12 on configure.ac

      Fixes bug 20935; bugfix on 0.2.9.6-rc.

  o Minor bugfixes (unit tests):

    - Stop expecting NetBSD unit tests to report success for ipfw. Part

      of a fix for bug 19960; bugfix on 0.2.9.5-alpha.

    - Fix tolerances in unit tests for monotonic time comparisons

      between nanoseconds and microseconds. Previously, we accepted a 10

      us difference only, which is not realistic on every platform's

      clock_gettime(). Fixes bug 19974; bugfix on 0.2.9.1-alpha.

    - Remove a double-free in the single onion service unit test. Stop

      ignoring a return value. Make future changes less error-prone.

      Fixes bug 20864; bugfix on 0.2.9.6-rc.

Changes in version 0.2.8.11 - 2016-12-08

  Tor 0.2.8.11 backports fixes for additional portability issues that

  could prevent Tor from building correctly on OSX Sierra, or with