Forward-port 0.2.8.6 entry to changelog and releasenotes

Changes in version 0.2.9.1-alpha - 2016-??-??

Changes in version 0.2.8.6 - 2016-08-02

  Tor 0.2.8.6 is the first stable version of the Tor 0.2.8 series.

  The Tor 0.2.8 series improves client bootstrapping performance,

  completes the authority-side implementation of improved identity

  keys for relays, and includes numerous bugfixes and performance

  improvements throughout the program. This release continues to

  improve the coverage of Tor's test suite.  For a full list of

  changes since Tor 0.2.7, see the ReleaseNotes file.

  Changes since 0.2.8.5-rc:

  o Minor features (geoip):

    - Update geoip and geoip6 to the July 6 2016 Maxmind GeoLite2

      Country database.

  o Minor bugfixes (compilation):

    - Fix a compilation warning in the unit tests on systems where char

      is signed. Fixes bug 19682; bugfix on 0.2.8.1-alpha.

  o Minor bugfixes (fallback directories):

    - Remove a fallback that was on the hardcoded list, then opted-out.

      Fixes bug 19782; update to fallback list from 0.2.8.2-alpha.

  o Minor bugfixes (Linux seccomp2 sandbox):

    - Allow more syscalls when running with "Sandbox 1" enabled:

      sysinfo, getsockopt(SO_SNDBUF), and setsockopt(SO_SNDBUFFORCE). On

      some systems, these are required for Tor to start. Fixes bug

      18397; bugfix on 0.2.5.1-alpha. Patch from Daniel Pinto.

    - Allow IPPROTO_UDP datagram sockets when running with "Sandbox 1",

      so that get_interface_address6_via_udp_socket_hack() can work.

      Fixes bug 19660; bugfix on 0.2.5.1-alpha.

Changes in version 0.2.8.5-rc - 2016-07-07

  Tor 0.2.8.5-rc is the second release candidate in the Tor 0.2.8

  series. If we find no new bugs or regressions here, the first stable