The writer Tom Junod has spent a career crafting profiles for men’s magazines like GQ and Esquire, often of famously complicated men like Norman Mailer, Kevin Spacey and Tony Curtis. But another man loomed behind Junod’s interest in these figures, informing his own sense of masculinity and manhood: his father, Lou. Lou Junod was handsome, charismatic — a man who seemed like a celebrity, even…