Friday night in Los Angeles, the TCM Film Festival honored the 30th anniversary of “Pulp Fiction” with a screening of the movie, preceded by this discussion Ben Mankiewicz had with four of the film’s stars: Samuel L. Jackson, Uma Thurman, John Travolta, and Harvey Keitel. Unfortunately, Quentin Tarantino was not there, nor was Bruce Willis, but there were plenty of good anecdotes shared by those in attendance…