Oil little changed capping a week of growth post-OPEC week

By Sabina Zawadzki LONDON (Reuters) - Oil futures were little changed on Friday, capping a week of price growth supported by the prospect of a crude production cut by OPEC countries even though doubts lingered over the cartel's ability to wipe out a persistent excess of oil. Brent traded at $52.50 at 1410 BST, a cent lower, while U.S. crude oil futures were a cent up at $50.45. The front-month contracts have now risen more than 10 percent since OPEC countries, including Middle Eastern foes Saudi