Runtime: added dummy implementation of caml_sys_getenv (OCaml 4.0 hashtables)
Runtime: added dummy implementation of caml_sys_getenv (OCaml 4.0 hashtables)

Ignore-this: 8e18a8116eb3fa11832a0d95fdcafa8a

darcs-hash:20120904120306-c8b6b-79df04ae765f07de2cda8ed6003c104129117c51

OCamlPro-Henry/js_of_ocaml,alainfrisch/js_of_ocaml,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