Yesterday’s punk, grunge, and rebel-outsider upstarts have an uncanny way of evolving into today’s elder statesmen of respectable infamy. (Hello, John Waters, Patti Smith, John Lydon, Henry Rollins, and Robin Byrd.) But it’s doubtful that Tom Six will ever be in the mix of latter-day prestige. His desire to stand apart from it is too great. In case he’s not on your radar, Tom Six is the Dutch director of the “Human Centipede” trilogy, a series of horror films so grotesque that the idea of sitting through them would be a deal-breaker for 97 percent of moviegoers. Six was after...