Modulification and removing of structural equality in VCS.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16704 85f007b7-540e-0410-9357-904b9bb8a0f7
Modulification and removing of structural equality in Stateid.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16705 85f007b7-540e-0410-9357-904b9bb8a0f7