LETTING SARAH BE SARAHWell, ladies and gentlemen, this could be your next Vice President. Spunky! Feisty! Folksy! Cutesy! With a head stuffed full of Republican bromides and an unshakeable certitude, Palin made it through the debate without any obvious “Couric moments.” That’s a victory of sorts. Not hard to do when you announce up front that you aren’t going to answer moderator questions you