Billed as the first "activity-based IR remote for the iPhone and iPod touch," NewKinetix's Rē ($70, aka Re) actually differentiates itself from other Infrared remote control accessories we've tested for iPhones and iPods by including both an upgradeable IR database of device codes and the ability to create "activities" -- custom remotes that mix the appropriate buttons from multiple devices to become one scrollable remote control, rather than forcing…