o Minor bugfixes:
    - Fix compilation when building with bufferevents enabled. (This
      configuration is still not expected to work, however.)
      Fixes bugs 12438, 12474, 11578; bugfixes on 0.2.5.1-alpha and
      0.2.5.3-alpha. Patches from Anthony G. Basile and Sathyanarayanan
      Gunasekaran.