Given the participation of this director and this all-male cast, I was looking forward to “Season” as a sort of Mametian testosterone bath. At some point, though, I realized that it wasn’t a play by Mamet that “Season” recalled, but “The Boys in the Band,” Mart Crowley’s 1968 drama of unhappy homosexuals. I mean, think about it. Both plays present an ostensibly supportive group of friends who, over the course of many drinks, turn on one another and segue into anguished confessions. Heck, there’s even an “I dare you to make that call” telephone scene in both plays. And each ends with characters revealing their profound discontent with their existential conditions. In “Boys,” of course, that’s being gay. The boys of “Season” are afflicted by the disease of being American, and as this play ponderously presents it, there’s no cure in sight.