JAKARTA, Indonesia — About 150 prisoners escaped Thursday from an overcrowded prison in western Indonesia, and others held officers hostage, following a riot triggered by a blackout. Connect With Us on Twitter Follow @nytimesworld for international breaking news and headlines. Twitter List: Reporters and Editors Prison directorate spokesman Akbar Hadi said the inmates forced their way out from Tanjung Gusta Prison in Medan, the capital of North Sumatra province, while others set the prison’s offices on fire. National…