LONDON (Reuters) - Oil prices were mixed on Friday as the market weighed the potential benefits of stimulus efforts by policymakers around the world against the demand destruction caused by fallout from the rapid spread of the coronavirus.Brent crude was on track for its fifth consecutive weekly drop. By 1029 GMT, it was down 39 cents, or 1.5%, at $25.95 a barrel. U.S. crude was up 12 cents, or 0.5%, at $22.72.Both of the benchmarks are down nearly two-thirds this year and the slump in..