HAL has come a long way. First, we had Scarlett Johansson as a human-like operating system. Now, Johnny Depp has been uploaded. If the singularity — when artificial intelligence surpasses human smarts — is indeed coming, at least it has decent taste in movie star avatars. First-time director and Oscar-winning cinematographer Wally Pfister’s “Transcendence” isn’t so much the “Him” to Spike Jonze’s “Her” as it is the more dystopian vision of the …