Fix PR#6031 : problem with -with-frame-pointers in caml_allocN

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13763 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Add cmo/cma/cmx/cmxa cases to OCAMLPARAM

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13764 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Add -fno-omit-frame-pointers to gcc when compiling with -with-frame-pointers

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@13765 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02