Changes by: Aleksey Nogin (nogin at cs.caltech.edu)
Date: 2005-04-10 18:02:12 -0700 (Sun, 10 Apr 2005)
Revision: 7195
Log message:
- Added the FSub foundation.
- Added the basic subtyping rules (page 8 of the challenge).
I will re-add most of the removed files once I finish converting them.