Warner Home Video has unexpectedly unveiled an alternative to Apple’s iTunes Digital Copy program with the Blu-ray release of its movie 10,000 BC. iTunes Digital Copy, which first debuted via a partnership between Apple and Twentieth Century Fox, provides customers who purchase a DVD or Blu-ray disc with an additional, iTunes-compatible digital copy of the movie. As noted on Warner’s 10,000BC web site, the Blu-ray Disc version of the film…