update to latest version of a few programs

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13316 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
add a few more cases

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13317 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
typo

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13318 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
typo

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13319 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
fix a few of the warnings given by newer versions of gcc

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13320 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02