The knives are out once more for the film business. A week into April and we’ve already had our fill of damning news stories. A Wall Street Journalinvestigation exposed the convoluted money trail behind Martin Scorsese’s “Wolf Of Wall Street;” days later, leaked files from a Panama-based law firm pointed the finger at several big film names as being among those reputed to have squirreled money away in offshore companies; and now comes intimations that yet another Hollywood studio, Warner Bros, is retrenching in favor of fewer, more branded franchise films after a run of lackluster returns from more ambitious, filmmaker-driven projects.