Changes by: Aleksey Nogin (nogin at cs.caltech.edu)
Date: 2003-07-09 03:31:26 -0700 (Wed, 09 Jul 2003)
Revision: 4726
Log message:
Got rid of the "arg_subst" part of the tactic_arg - we never used it, and
I do not thing it is likely to be useful in the future.