From: Enrico Tassi Date: Sun, 17 Oct 2010 09:12:29 +0000 (+0000) Subject: backport of patches to unification X-Git-Tag: make_still_working~2774 X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=2e6a92bad35a8f8883c498c6a2f36ea3208d4ddd;hp=2e6a92bad35a8f8883c498c6a2f36ea3208d4ddd;p=helm.git backport of patches to unification ---