They say that you can never go home again, but in truth, it seems harder to ever fully leave. No matter how far you move, how radically your environment shifts, you carry the place you’re from with you, like a talisman or a chronic disease. The Oscar-nominated filmmaker Richard Linklater has been associated with Austin, Texas, since the release of his breakthrough feature, Slacker, in 1990, and despite the occasional flirtation with Hollywood, he’s never really left. But his new documentary Hometown Prison takes him back to the East Texas city of Huntsville where he spent his formative years, and...