factor

Author	SHA1	Message	Date
Slava Pestov	1aef8c48a0	start 0.68 by moving list-math to contrib and simplifying subset combinator	2004-10-18 05:37:46 +00:00
Slava Pestov	f9886da504	some code cleanups, remove usages of deprecated combinators	2004-10-07 03:34:22 +00:00