People who have heard the new Madonna album, which is slated for a spring release, are hailing it as a return to form for the archetypal pop diva. What major will Madge and Live Nation, which acquired the rights to her records in a 2007 mega-bucks deal, choose as the releasing label? Those in the know say it won’t go to WMG, Madonna’s home since the beginning of her career in 1983…