Weak dollar, tame U.S. inflation boost global stocks; yields dip

By Caroline Valetkevitch NEW YORK (Reuters) - Increasing expectations the U.S. Federal Reserve will hold off raising interest rates until September at the earliest boosted Wall Street on Thursday and drove the dollar to near its lowest level since January. U.S. data showed recent strength in the dollar and lower oil prices suppressed producer price inflation in April, supporting the view the Federal Reserve will probably not raise rates until later in the year. "People are pretty focussed o