Global stocks dip, dollar on tenterhooks for Fed; oil bounces

By Wayne Cole SYDNEY (Reuters) - Asian shares were mostly lower on Wednesday while the dollar dithered as markets waited anxiously for the Federal Reserve to provide guidance on the risk of U.S. rate hikes this year. While no move is expected at this meeting it does include updates of Fed members' economic projections and a news conference with Chair Janet Yellen, events that have caused violent market reactions in the past. "There's no question that the FOMC is expected to provide the much-need