A few Saturdays ago, I re-watched Cliffhanger. Now, that’s a movie. Why is its director, Renny Harlin, once a dependable big-action guru, making sub-schlock like The Covenant? This is cobbled-together teenybopper tripe about feuding male witches — apparently they can’t even be granted the manlier dignity of being called ”warlocks” — with nothing to offer but classic bad dialogue. The Bad Male Witch taunts the Good Male Witch by asking, ”How ’bout I make you my wee-yotch?” Seriously, Renny Harlin: What are you doing?