Kerfuffle? Brouhaha? Spat? Tiff? Rape? Clusterfuck? Nobody seems to have a handle on le mot juste for whatever it is that’s going down at 1000 Mass. Avenue, home of the Cato Institute’s refurbished pad, where the Koch Boys, Mannie, Moe, and Jack Dave and Charlie, are trying to muscle out long-time prez Ed Crane. The…