UPDATE 3-Eni becomes first oil major to cut dividend as seeks to fund growth
* Suspends share buyback, stock ends down 4.6 pct * Cuts investments 17 pct in 2015-2018 to 48 billion euros * Targets annual output growth of 3.5 percent (Adds fund manager, details, shares) By Stephen Jewkes and Ron Bousso MILAN/LONDON, March 13 (Reuters) - Italy's Eni
