unicorn v0.2.2

Eric Wong (19):
      Fix link to Rubyforge releases page
      start libifying common launcher code
      unicorn_rails: fix standard pid path setup
      Move listen path and address expansion to Configurator
      Trap WINCH to QUIT children without respawning
      Remove Mongrel stuff from CHANGELOG
      HttpResponse: close body if it can close
      Add Unicorn::App::ExecCgi
      Process management cleanups
      documentation/disclaimer updates
      unicorn_rails: remove unnecessary Rack-loading logic
      unicorn/http11: remove GATEWAY_INTERFACE
      http11: don't set headers Rack doesn't like
      HttpRequest test so our requests pass Rack::Lint
      HttpRequest: correctly reference logger
      Rotate master logs before workers.
      Simplify code for sleeping/waking up the master
      Handle Rack multivalue headers correctly
      unicorn 0.2.2