When O’Neill was elected to represent the 10th District in 1979, he was 29, a gallon of gasoline cost 86 cents, and Gloria Gaynor’s “I Will Survive” was at the top of the music charts. That would prove to be a fitting anthem for the legislator who, at age 69, is the longest-serving person on City Council. He’s won 10 elections over 40 years.