(Adds details on mutual funds and ETFs, analyst quote, table, byline) By Trevor Hunnicutt NEW YORK, Sept 21 (Reuters) - U.S.-based taxable-bond funds took in $7 billion during the latest week, the largest weekly intake since July, adding to an already strong year for debt against the backdrop of a rate-hiking cycle, Lipper data showed on Thursday. Even in a week with big inflows for technology stocks, U.S. fund investors continue to favor debt over equity. The Federal Reserve on Wed