Possibly as a result of catching yesterday’s Oprah tribute, Sumner Redstone has amended his position on Tom Cruise (or told his wife to stop kvetching) and has been laying down a welcome mat in hopes that a Mission: Impossible 4 might happen down the road. (S.R. and Cruise dined together in March, it says here.) “I consider Tom Cruise a great actor and a good friend,” Redstone said during a business conference in South Korea. “And if Paramount decides — and they will make the decision — to move ahead with him, I will not object.”