rem: status_t stop_timers_service()
add: status_t stop_timers_service(void)
context: status_t stop_timers_service(){	net_timer *nt, *next;	int32 tries = 20;	status_t status;	delete_sem(g_timers.wait);	delete_sem(g_timers.lock);	g_timers.wait = -1;	g_timers.lock = -1;	wait_for_thread(g_timers_thread, &status);	// make sure the structure isn't used anymore	while (g_timers.in_use != 0 && tries-- > 0)		snooze(1000);	// free the remaining timer entries	for (nt = g_timers.first; nt; nt = next) {		next = nt->next;		free(nt);	}	puts("net timers service stopped.");			return B_OK;}