Stocks creep up amid Fed limbo, dollar dips

By Marc Jones LONDON (Reuters) - World shares crept up on Tuesday while the dollar lost ground as investors awaited further clues on whether the Federal Reserve will raise U.S. interest rates this year. Wall Street was expected to open modestly higher , with a busy day of economic data helping traders fill the gap before an annual gathering of global central bankers in the mountains of Wyoming on Thursday and Friday. The euro also posted gains as one major bank decided the news had been good eno