Added an option to configure the hostname manually. And there was a problem when APC wasn't present.

include/cronhooks.php

@@ -24,6 +24,9 @@ function cronhooks_run(&$argv, &$argc){
 	load_config('config');
 	load_config('system');
 
+	if ($hostname =  get_config('system', 'hostname'))
+		$a->set_hostname($hostname);
+
 	$lockpath = get_config('system','lockpath');
 	if ($lockpath != '') {
 		$pidfile = new pidfile($lockpath, 'cron.lck');