WESTWORLD (1973, USA, 88m, 15) ***½ Action, Sci-Fi, Thriller, Western dist. Metro-Goldwyn-Mayer (MGM) (USA), MGM-EMI (UK); pr co. Metro-Goldwyn-Mayer (MGM); d. Michael Crichton; w. Michael Crichton; pr. Paul N. Lazarus III; ph. Gene Polito (Metrocolor | 2.39:1); m. Fred Karlin; ed. David Bretherton; ad. Herman A. Blumenthal. cast: Yul Brynner (Gunslinger), Richard Benjamin (Peter Martin),…