At the Sundance Film Festival this year, “Swiss Army Man” earned a nickname: “the farting-corpse movie.” Crowds were iffy on the comic drama, which is by turns bizarre, sweet and unsettling, but it won the festival’s directing award for first-time feature filmmakers Daniel Kwan and Daniel Scheinert, who are collectively billed as the Daniels. Paul Dano plays Hank, a man stuck on a desert island.