By Daniel Bases NEW YORK, March 1 (Reuters) - U.S. fund investors turned positive on equities with domestic funds garnering most of the fresh cash, while municipal bond funds held onto positive territory although their inflows dwindled to a three-month low, data from Thomson Reuters' Lipper showed on Thursday. In the week ended Feb. 29, U.S. equity funds pulled in a net $7.5 billion in new investment, with domestic equities providing $6.6 billion of the total. The flow data, howev