FOREX-Dollar gains on outlook for hawkish Fed, strong U.S. data

* Traders await Fed statement Wednesday * U.S. consumer confidence rises in July (Updates prices, adds comments) NEW YORK, July 29 (Reuters) - The U.S. dollar hit fresh eight-month highs against the euro on Tuesday and advanced against the yen and Swiss franc on expectations for positive U.S. economic data and a potentially more hawkish tone from the Federal Reserve. Analysts said the Fed, which ...