[runtime] array_get/set bound check bugfix
[runtime] array_get/set bound check bugfix

Ignore-this: 319e96b892d9c67e0e11d14bf89c43fe

darcs-hash:20110919162408-b8f7d-0594b0d738eba5500277a3e12e90694471582efd

OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml,alainfrisch/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml,alainfrisch/js_of_ocaml,alainfrisch/js_of_ocaml,OCamlPro-Henry/js_of_ocaml