Bale and Worthington attempt to out-glower one another in “Terminator Salvation” There was a time when watching an action movie inevitably meant turning off the brain, stuffing one’s head full of popcorn, and departing the theater with a glow of adrenaline-fueled bliss that at least lasted until you got to the parking lot. Somewhere along the line, a select few movies proved that guns and muscles didn’t have to come with a frontal lobe…