(Add details, quotes) Oct 18 - The St Louis Cardinals moved within one win of returning to the World Series with an 8-3 romp over the San Francisco Giants that gave them a 3-1 lead in the National League Championship Series on Thursday. Starter Adam Wainwright, bouncing back from a sub-par outing, stymied the Giants with a sharp-breaking curve ball, and the Cardinals gave him plenty of support with two runs in the first and two more in the fifth, sixth and seventh innings. ...