At the center of Harold Pinter and Joseph Losey’s “The Servant” (opening Friday at Laemmle’s Royal) is how wonderful—no, how scrumptious—it is to watch James Fox’s sniveling, weakling upper-class gent brought down and subverted by Dirk Bogarde’s all-seeing, smirking house servant. Pinter’s name precedes Losey’s in the first sentence for a few reasons. One has ...