configure stript allows make v4.00

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@17042 85f007b7-540e-0410-9357-904b9bb8a0f7
Fix for critical bug in arity check.

Fix partially blind because Coq 8.3 does not compile fully on my machine.