Use released gem version of Reel
Add debug logging to Rack and WEBrick adapters
Properly start/finish Net::HTTP
Use any available port for adapters
Use Celluloid::TaskThread for JRuby 1.7.3

This is a workaround for http://jira.codehaus.org/browse/JRUBY-7112
See: https://github.com/celluloid/celluloid/issues/169
Try sleep instead of Thread.yield to fix rbx flakiness
Remove verbose debugging output