Doing damage control in the wake of Republican presidential candidate Rick Perry’s “senior moment” during last night’s nationally televised debate, in which he cast about for full minutes in search of a government agency he could vow to slash, Team Perry is spinning the gaffe as a folksy human flub, recalling episodes of high-profile mental drifting by Presidents Obama, Reagan and Ford. Staffers blasted out a fundraising email, asking supporters what department of the federal government they would cut if they were president