By Sinéad Carew and Amanda Cooper NEW YORK/LONDON (Reuters) -MSCI's global equities gauge fell on Wednesday while the dollar rose and gold prices dipped, as investors digested cautious comments from Federal Reserve Chair Jerome Powell about when the central bank might next cut U.S. interest rates. In his first remarks since the Fed meeting ended with a rate cut last week, Powell on Tuesday underlined the need for policymakers to balance the competing risks of high inflation and a weaker jobs market in th ...