Arnold Schwarzenegger is, uh, back. And so is the whole “Terminator” universe: morphing machines, the industrious version of Sarah Connor and a sometimes-befuddled Kyle Reese. The trailer for “Terminator: Genisys” hit the Web on Thursday, and it appears to have amped up the action to video game levels. How else to explain Schwarzenegger’s old-style Terminator — who has apparently raised young Sarah — hurtling through the air into the blades […]