New York University’s controversial penchant under President John Sexton for doling out real-estate perks to top professors and executives also extended to his son.Jed Sexton, whose sole affiliation with NYU was his status as the president’s son, for years enjoyed a spacious faculty apartment while the university experienced a “severe” housing shortage, The Post has learned. In spring 2002, NYU ordered that a pair of one-bedroom apartments normally reserved for law school faculty be combined into a lavish, two-story spread in the heart of Greenwich Village, property records show.The Harvard-educated Sexton, who was a 33-year-old aspiring actor at the time,...