New York nightlife luminary Peter Gatien is the central subject of Billy Corben&amp;#8217;s &amp;#8220;Limelight,&amp;#8221; a so-so documentary that details the dance and drugs and self-damage of the 1980s: rise, fall, across the course of a pursuit, in the hours of a long night. Corben&amp;#8217;s earlier films include 2006&amp;#8242;s &amp;#8220;Cocaine Cowboys&amp;#8221; and &amp;#8220;Cocaine Cowboys II&amp;#8221; (2008) [...]