Support the two variants on i386.

git-svn-id: http://caml.inria.fr/svn/ocaml/branches/raise_variants@14231 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Support the two variants on i386, intel syntax (i.e. Win32 msvc port).

git-svn-id: http://caml.inria.fr/svn/ocaml/branches/raise_variants@14232 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
Fix testsuite.

git-svn-id: http://caml.inria.fr/svn/ocaml/branches/raise_variants@14233 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02