Holy smack in the face Batman! Yahoo Japan just signed a 2-year deal with Google! Yes, with Google! Not, Bing! Before the word "mutiny" jumps to your prefrontal cortex-your "mind" for the rest of us-you need to know this: Yahoo holds only a 35% stake in Yahoo Japan, so the search engine couldn't put its foot down and insist that Bing be the search engine of choice. Still, what an embarrassment! I mean,