Make driver start in background and return 0 on init success

Convert function descriptions to use doxygen while there

server/drivers/bayrad.c

@@ -64,7 +64,7 @@ typedef struct bayrad_private_data {
 
 // Vars for the server core
 MODULE_EXPORT char * api_version = API_VERSION;
-MODULE_EXPORT int stay_in_foreground = 1;
+MODULE_EXPORT int stay_in_foreground = 0;
 MODULE_EXPORT int supports_multiple = 0;
 MODULE_EXPORT char *symbol_prefix = "bayrad_";
 
@@ -173,7 +173,7 @@ bayrad_init(Driver *drvthis)
 
   report(RPT_DEBUG, "%s: init() done", drvthis->name);
 
-  return 1;
+  return 0;
 }