PBD::DebugBits PBD::DEBUG::BackendThreads = PBD::new_debug_bit ("backendthreads");
PBD::DebugBits PBD::DEBUG::BackendPorts = PBD::new_debug_bit ("backendports");
PBD::DebugBits PBD::DEBUG::VSTCallbacks = PBD::new_debug_bit ("vstcallbacks");
+PBD::DebugBits PBD::DEBUG::FaderPort = PBD::new_debug_bit ("faderport");