urbanc [Mon, 09 Jan 2006 15:55:15 +0100] rev 18626
added some lemmas to the collection "abs_fresh"
the lemmas are of the form
finite (supp x) ==> (b # [a].x) = (b=a \/ b # x)
previously only lemmas of the form
(b # [a].x) = (b=a \/ b # x)
with the type-constraint that x is finitely supported
were included.