LOS ANGELES (AP) — Billy Gardell is scrupulous about giving credit where it’s due, at home and at work. He describes his wife, Patty, as the “North star” who helped him through tough times and kept their family on track. Chuck Lorre, the prominent producer who cast the actor-comedian in “Mike & Molly” and again in “Bob Hearts Abishola,” has “literally changed my life.” The praise sounds heartfelt, a match for how Gardell comes across: A guy with a working-class background who considers himself remarkably lucky to have landed as a network TV star, twice.