Wounded by the CalPERS bribery scandal and other problems, a New Jersey pharmaceutical-benefits company is being sold. Medco Health Solutions Inc., one of the giants of the drug-benefit industry, on Thursday agreed to a $29.1 billion takeover by rival Express Scripts Inc. Such a deal would have been unthinkable a few months ago, when Medco was flying high. But the New Jersey company ran into a series of problems that began with its entanglement in the CalPERS bribery case. "This year has been a head-spinner for this (Medco) management team, starting out with the CalPERS issues," said investment analyst Arthur...