Convert characters to OCaml's unsigned representation when reading.
Convert characters to OCaml's unsigned representation when reading.

ocamllabs/ocaml-ctypes,whitequark/ocaml-ctypes,sjfloat/ocaml-ctypes,ocamllabs/ocaml-ctypes,dsheets/ocaml-ctypes,yallop/ocaml-ctypes,sjfloat/ocaml-ctypes,sjfloat/ocaml-ctypes,yallop/ocaml-ctypes,whitequark/ocaml-ctypes,whitequark/ocaml-ctypes,dsheets/ocaml-ctypes,dsheets/ocaml-ctypes