“It has a relationship to movies from the ’40s, like “Bringing Up Baby,” in terms of the banter and the rhythm of things and a lot of that era of filmmaking,” Meg Ryan told EW this week of her new rom-com, “Whatever Happens.” And yes, Ryan used to be the queen of rom-coms and knows a thing or two about the genre, but for this film, she makes her sophomore directorial follow-up, helming and starring in the movie.