That’s Fronkensteen to you. Mel Brooks’ comedy classic celebrates its 40th anniversary this year — with a new Blu-Ray edition in stores, and with Brooks leaving a six-fingered handprint outside the TCL Chinese Theater in Hollywood, because he’s Mel Brooks. So let’s all give a whinny, a roll in the hay and a group shout of “HE VAS MY . . . . BOYFRIEND!” to this movie, which is more fun than . . . well, most things.