The National Retail Federation forecast sales for the last two months of the year at $630.5 billion, excluding for autos, gasoline and dining out. The industry lobby’s forecast is a closely watched benchmark for the upcoming holiday season, when retailers like Macys Inc (M.N), Wal-Mart Stores Inc (WMT.N) and Target Corp (TGT.N) generate an outsized portion of their profits and sales. While some economic indicators have improved, U.S.