With a pairing as strong Clint Eastwood and Tom Hanks, it’s not a surprise “Sully” is already generating Oscar buzz. After sweeping six Oscar nominations with “American Sniper,” Eastwood’s highest-grossing feature to date, he tackles another tale of American heroism with his newest feature, “Sully.” Hanks leads the film as Captain Chesley “Sully” Sullenberger, the...