In a confusing timeline of events that only Charlton Heston could love, Dell confirmed today that it already has touted its soon-to-be-unveiled "Adamo" as a rival to the MacBook Air in a blogvertisement that posed itself as a rumor that Adamo would do just that:"Rumor has it that Dell is coming out with a computer called Adamo that will rival the MacBook Air. At press time, the company was keeping the product tightly under wraps, but PC users rejoice - word on the street is that something cool is coming your way."The adblog appeared on a "luxury internet magazine," and was noticed by The New York Times Bits Blog, who bounced the copy off Dell, which confirmed it a