Conditionally compile RTLD_NODELETE and RTLD_NOLOAD
Conditionally compile RTLD_NODELETE and RTLD_NOLOAD

These are not available on OpenBSD

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