NAME
	set_heart_beat - set status of heartbeat in this_object()

SYNOPSIS
	int set_heart_beat(int time)


DESCRIPTION
	This function will set the time interval between each heartbeat in
	this_object(). A time <= 0 will disable heartbeat in the object.
	The returned value will be the new interval.

	Config.h must define MUDOS_HEART_BEAT for this function to exist.

SEE ALSO
	efun/heart_beat/, funs/heart_beat
