Open ... and Shut  Just when you thought it was safe to go back into the water, the thought police are back. For years, the open source community was torn apart by fractious debates over what "open" meant and who was open enough. As we've moved beyond name calling to focus on getting work done, the same old debate has shifted to cloud computing, with a new crop of pundits and evangelists wrangling over who is the cloudiest of them all.…