NEW YORK — Frank Serpico has finally gotten his due from the New York Police Department. The legendary police whistle-blower got his proper police Medal of Honor and its accompanying certificate after Mayor Eric Adams stepped in and said he’d make sure Serpico got the accolade, ending Serpico’s five-decade fight with the department. Serpico announced his receipt of the honor on Twitter Thursday, crediting Adams and several others — including veteran New York Daily News scribe Larry McShane, whose story about the 50th anniversary of his testimony before the Knapp commission helped bring the ove...