NEW YORK (Reuters) - The U.S. dollar fell across the board on Wednesday after dismal U.S. retail sales data painted a gloomy picture of the economy and supported the case for further interest rate cuts by the Federal Reserve.The dollar index , which measures the U.S. currency against six major currencies, was down 0.1% at 98.188.U.S. retail sales fell for the first time in seven months in September, suggesting that manufacturing-led weakness could be spreading to the broader economy."The U.S...