tor/changes/bug16248

  o Major bugfixes (dns proxy mode, crash):
    - Avoid crashing when running as a DNS proxy. Closes bug 16248; bugfix on
      0.2.0.1-alpha. Patch from 'cypherpunks'.

  o Minor features (bug-resistance):
    - Make Tor survive errors involving connections without a corresponding
      event object. Previously we'd fail with an assertion; now we produce a
      log message. Related to bug 16248.