So when all else fails, and there are tanks in the streets, you better know how to vote from the rooftops. Houses in the exclusive Connecticut suburb of Greenwich, long known as an enclave for hedge fund managers, are now selling for significantly less lately, with one recent colonial house forced to the auction block. The property, located on the iconic Round Hill Road, is being sold in what would normally be unthinkable fashion for Greenwich: it’s being auctioned.