rem: return sys_snooze_until(sys_system_time() + microseconds, B_SYSTEM_TIMEBASE);
add: return snooze_etc(timeout, B_SYSTEM_TIMEBASE, B_RELATIVE_TIMEOUT);
context: snooze(bigtime_t microseconds){	return sys_snooze_until(sys_system_time() + microseconds, B_SYSTEM_TIMEBASE);}