Oil prices capped by doubts OPEC-led cut will end glut

By Julia Payne LONDON (Reuters) - Oil prices edged higher on Wednesday but gains were capped by investors' doubts that oil cartel OPEC would agree to a large enough production cut to significantly reduce the global surplus when it meets next week. International Brent crude oil futures rose 11 cents to $49.23 a barrel at 0940 GMT after climbing to $49.42 a barrel earlier in Wednesday's session on optimism OPEC would agree to an output cut. Reuters commodities analyst Wang Tao said that Brent coul