Removing the use of Gmap from Auto.

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16522 85f007b7-540e-0410-9357-904b9bb8a0f7
Gmap is now useless, hail to Map!

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@16523 85f007b7-540e-0410-9357-904b9bb8a0f7