prefix c stubs with ocaml_bigstring_unix

Author: Christopher Zimmermann

src/bigstring_unix.ml

@@ -15,8 +15,8 @@ let get_bounds name ?(off=0) ?len t =
  then invalid_arg ("Bigstring_unix." ^ name)
  else (off, len)
 
-external read_fd : Unix.file_descr -> t -> int -> int -> int = "bigstring_read"
-external write_fd : Unix.file_descr -> t -> int -> int -> int = "bigstring_write"
+external read_fd : Unix.file_descr -> t -> int -> int -> int = "ocaml_bigstring_unix_read"
+external write_fd : Unix.file_descr -> t -> int -> int -> int = "ocaml_bigstring_unix_write"
 
 let read fd ?off ?len t =
  let off, len = get_bounds "read" ?off ?len t in

src/bigstring_unix_stubs.c

@@ -22,7 +22,7 @@
 #include <caml/threads.h>
 
 CAMLprim value
-bigstring_read(value vfd, value vba, value voff, value vlen)
+ocaml_bigstring_unix_read(value vfd, value vba, value voff, value vlen)
 {
  void *iobuf = ((char *)Caml_ba_data_val(vba)) + Unsigned_long_val(voff);
 #ifdef Handle_val
@@ -90,7 +90,7 @@ bigstring_read(value vfd, value vba, value voff, value vlen)
 }
 
 CAMLprim value
-bigstring_write(value vfd, value vba, value voff, value vlen)
+ocaml_bigstring_unix_write(value vfd, value vba, value voff, value vlen)
 {
  char *iobuf = ((char *)Caml_ba_data_val(vba)) + Unsigned_long_val(voff);
 #ifdef Handle_val