[Bill Libby was one of the most prolific pro basketball authors of the 1970s, publishing classic biographies of Rick Barry, Spencer Haywood, and Jerry West. Here, the L.A.-based Libby weighs in on Lew Alcindor’s entry into the NBA following his record-setting career at UCLA. A quick point. Libby clearly finds Alcindor enigmatic and inscrutable. That mak…