NEW YORK (Reuters) – ATT Inc is intrigued by Latin America and especially Mexico and would not rule out an opportunistic deal there even as it seeks to complete its $48.5 billion planned takeover of DirecTV, an ATT executive said at a conference on Tuesday. ATT is one of several potential buyers Carlos Slims America Movil has contacted as it tries to sell a chunk of assets, according to a source familiar with the situation. …