o Minor bugfixes:
    - When logging information about an EXTEND2 or EXTENDED2 cell, log
      their names correctly. Fixes part of bug 12700; bugfix on
      0.2.4.8-alpha.

  o Minor bugfixes:
    - When logging information about a relay cell whose command we
      don't recognize, log its command as an integer. Fixes part of
      bug 12700; bugfix on 0.2.1.10-alpha.