Changes by: Aleksey Nogin (nogin at cs.caltech.edu)
Date: 2006-01-13 20:10:29 -0800 (Fri, 13 Jan 2006)
Revision: 8473
Log message:

      Now that the arithmetical reduction is in place, the lof_nil lists will always
      have a length that is literally 0 (as opposed to simply being equal to 0).