`Batman Returns'--licensees cheer.

Discusses how only select items tied to the `Batman Returns' movie have trickled into the stores, unlike the original `Batman' merchandise. Just the way Warner Brothers Consumer Products division wants it; Late introduction is central to a meticulously crafted marketing plan; Strategy is to control a licensing sequel; Most of the promotional partners signed on two years ago. INSET: Making Gotham safe for licensees (chronological look)..