Merge commit 'tor-0.2.2.7-alpha' into debian-merge

* commit 'tor-0.2.2.7-alpha': (94 commits)
  bump to 0.2.2.7-alpha
  note the two new fixes are in 0.2.2.7-alpha too
  spread guard rotation out throughout the month
  weight guard choice by bandwidth; discard old guards
  add changelog entries for my commits from last week
  clean 0.2.2.7-alpha changelog; add 0.2.2.6 blurb
  bump to 0.2.1.22, and give it a changelog
  downgrade a warning
  rotate keys for moria1 and gabelmoo
  Fix build on Solaris by disabling support for DisableAllSwap
  Build Bug: -lm should come after passing ../common/libor.a to linker
  Log a notice when we get a new control connection
  stop bridge authorities from leaking their bridge list
  whitespace fixes
  fix an impossible-to-actually-trigger overflow in descriptor generation
  resolve path weighting edge case; fixes bug 1203
  trivial cleanups
  fix some typos in our spec files
  man page entries for PerConnBW{Rate,Burst}
  remove redundant validate_addr_policies() checks
  ...