By Marc Jones LONDON (Reuters) - Stocks and the dollar nudged higher on Thursday after the U.S. Federal Reserve's first interest rate cut of the year, while French politics kept its markets jittery and the pound held its ground ahead of a Bank of England rate decision. The Fed's steady-as-she-goes-message from what had been a politically charged meeting lifted both the pan-European STOXX 600 and Wall Street futures 0.5%, despite an initially mixed reaction from U.S. traders on Wednesday. [.N] Asia had r ...