'Flower Drum Song' on Broadway by MICHAEL KUCHWARA, AP Drama Critic
"Flower Drum Song" has always occupied a lower rung in the Rodgers and Hammerstein pantheon of musicals that includes such classics as "Carousel," "The King and I" and "Oklahoma!"<br /> And there's no reason to expect it to move up a notch, judging from the radically reworked version that opened Thursday at Broadway's Virginia Theatre after a successful run last year in Los Angeles.<br /> <font size="1" face="Arial,H…