Among specialty releases, IFC Films’ comedic drama “Shithouse” opened in 28 theaters across the country and scraped together $6,750 ($241 per location). The well-reviewed movie launched simultaneously this weekend on premium video-on-demand platforms, where the studio said landed on the iTunes top 15 charts among independent offerings. “Shithouse,” the directorial debut of Cooper Raiff, premiered this year at SXSW and won the Grand Jury Prize.