By most accounts, the saga of Coyote Vs. Acme has a happy ending. A Looney Tunes movie made with far more love and skill than the higher-profile Space Jam joints was abandoned by Warner Bros. until it became a cause célèbre. The attention over its impending tax write-off demise saved the movie, which was sold off to a smaller distributor that put it in thousands of movie theaters. Now an all-ages comedy actually uses the Looney Tunes characters …