****/****starring Julia Garner, Josh Brolin, Alden Ehrenreich, Amy Madiganwritten and directed by Zach Cregger by Walter Chaw Zach Cregger’s Weapons is joy. It’s nostalgia without an obvious antecedent, capturing the phenomena of “hiraeth” for a sensibility raised on weird pulp and Halloween. If nostalgia is the last deposit with cultural veins still rich enough to mine, this is the way to do it. Weapons is the best Ray Bradbury adaptation there has ever been; while it’s not actuall...