The tiny library started out innocently enough. Built outside a church in Lincoln, Neb., it was one of about 25 free, barely-bigger-than-a-birdhouse-size book dispensaries that have sprung up in this Great Plains city. But that was before public officials said this particular library was a public hazard that violated a city ordinance. The city?s verdict: get rid of the library or we?ll do it for you.