uint64_t PBD::DEBUG::Stateful = PBD::new_debug_bit ("stateful");
uint64_t PBD::DEBUG::Properties = PBD::new_debug_bit ("properties");
+uint64_t PBD::DEBUG::FileManager = PBD::new_debug_bit ("filemanager");
+uint64_t PBD::DEBUG::Pool = PBD::new_debug_bit ("pool");
uint64_t PBD::debug_bits = 0x0;