In complaining that America had become a "country of whiners," retiring Mayor Richard M. Daley unloaded a speech that no candidate would dare give during a campaign. The speech raises a question: Why didn't this Daley show up sooner?He said we whined about the Japanese taking us over in the 1970s and whined about the loss of manufacturing jobs to Mexico. Now we're whining about China and India slicing off prime cuts of our economy.