It's a dream come true BY JAN STUART
Director Bill Condon has fashioned the best movie "Dreamgirls" that the 1981 Broadway hit could hope to be, which is to say he has successfully shaken free from the shadow of Michael Bennett's landmark staging and found a forcefully kinetic language of his own. If he hasn't entirely rectified the sundry weaknesses of the Henry Krieger score, he keeps the story hurtling forward even as the music saps out on his sensat…