A Rich Day for Banks Advising on Big Merger Deals. de la Merced, Michael J, Goldman Sachs Group Inc, BG Group Plc, Royal Dutch Shell Plc, Mylan Inc, Perrigo Company, Banking and Financial Institutions, Mergers, Acquisitions and Divestitures, Oil (Petroleum) and Gasoline, Bank of America Corporation, Robey Warshaw LLP