The musical becomes hot again, at least for the moment by Geoff Edgers
Meron does believe ''Chicago'' is opening doors. Already, movie executives who wouldn't give him a chance last year are taking meetings. Right now, he and Zadan are busy. They want to produce ''Into the Woods,'' and have two new songs from Stephen Sondheim. They're developing an original musical with choreographer Matthew Bourne. And they're putting together a deal to buy the rights to a film based on a Broadway musi…