A maniac threw gasoline on cops and set fire to a decommissioned police precinct in the Bronx early Friday morning using a gas-filled Coca-Cola bottle, according to sources and the NYPD. Samantha Calderon, 32, of the Bronx, was witnessed by two police officers allegedly pouring gasoline on a decommissioned stationhouse on Alexander Avenue at around 2:30 a.m., according to sources. The alleged firebug then lit the gasoline on fire, which ignited on the structure briefly before it self-extinguished, cops said. When confronted, Calderon became combative and threw gasoline from the bottle of Coke onto the officers, hitting them in the...