With 'log' keyword, always log process name

Do not tag log messages with service description, but use process name.
Possibly add :ID later to denote instance if multiple instances exist.

Also, add priority daemon.info log level.

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

service.c

@@ -214,7 +214,7 @@ static int service_start(svc_t *svc)
 				/* Reset signals */
 				sig_unblock();
 
-				execlp("logger", "logger", "-t", strlen(svc->desc) > 0 ? svc->desc : svc->cmd, NULL);
+				execlp("logger", "logger", "-t", svc->cmd, "-p", "daemon.info", NULL);
 				_exit(0);
 			}