Merge commit 'tor-0.2.2.1-alpha' into debian-merge

* commit 'tor-0.2.2.1-alpha': (187 commits)
  HiddenServiceVersion must be set to 2 currently.
  put karsten's changelog in the right place
  When Tor fails to parse a descriptor of any kind, dump it to disk.
  update fetch-all with dir auth
  changelog and spec changes for the .exit fix
  bump to 0.2.2.1-alpha
  typos in dir-spec
  mark off a done proposal
  clean up the changelog for 0.2.2.1-alpha
  A changelog entry and a bit more documentation for socks-client
  Clean up a couple of style issues in the socks-client branch.
  new proposals: params in consensus, and lower circwindow
  Add some fixes after discussion with Nick.
  Refactor geoip_get_dirreq_history() some more.
  Fix a memory leak in summarizing directory request timing.
  Add the first 8 bytes of the git commit digest to our versions.
  autoconf 2.59 appears not to support AC_PROG_SED
  Survive unparseable cached cert file
  Notice v3 cert parsing failures
  Make crypto_digest_get_digest nondestructive again.
  ...