The Heinz-McDonald's breakup probably isn't that big of a deal, and has more to do with Brazil

Breathlessly, The Huffington Post called it "the divorce of the century." But in reality, McDonald's and Heinz have been through this dance before -- notably in 1973, when a tomato shortage caused Heinz to focus less on their bulk fast-food accounts. After that, many Heinz executives believed they were "on the outside looking in," and in fact, U.S. cust…