Fri Nov 11 21:53:57 1994   paul   (Leto at 131.174.124.36)

	* Fixed all but one adt (istack?). That one is missing some 
	defines But I don't think many people use this code at all, do 
	they ? 

Mon Mar 29 10:15:53 1993   Luke Mewburn   (Zak at 131.170.24.42)

	* updated stack.c to have query_stack(); 

