Yet another version of fake_thm_name. "Full" hashing ensures that there are no collisions
unless theorems differ by sorts alone, which should not matter. Also minor fixes to
standard hashing.
%ID: $Id$
%Author: Jia Meng, NICTA
%untyped combinator reduction for S
%S P Q R
input_clause(a2,axiom,
[++equal(hAPP(hAPP(hAPP(c_COMBS,P),Q),R),hAPP(hAPP(P,R),hAPP(Q,R)))]).