Peter Debruge Chief Film CriticWhile the Hollywood studios continue to keep their tentpoles locked up till most American cinemas reopen, indie distributors are releasing a handful of smaller movies with big stars in supporting roles this week.Can’t wait to see Robert Pattinson in “Tenet”? Well, you can always catch him in the festival-anointed imperialist critique “Waiting for the Barbarians.” While the release date for “Dune” remains in question, Swedish actor Stellan Skarsgård leads the