update swig on windows

winx64/bin/swigwin-4.0.0/Lib/ocaml/ocaml.i

@@ -0,0 +1,54 @@
+/* -----------------------------------------------------------------------------
+ * ocaml.i
+ *
+ * SWIG Configuration File for Ocaml
+ * ----------------------------------------------------------------------------- */
+
+/* Insert common stuff */
+%insert(runtime) "swigrun.swg"
+
+/* Include headers */
+%insert(runtime) "ocamldec.swg"
+
+/* Type registration */
+%insert(init) "swiginit.swg"
+%insert(init) "typeregister.swg"
+
+%insert(mlitail) %{
+  val swig_val : c_enum_type -> c_obj -> Swig.c_obj
+%}
+
+%insert(mltail) %{
+  let rec swig_val t v = 
+    match v with
+        C_enum e -> enum_to_int t v
+      | C_list l -> Swig.C_list (List.map (swig_val t) l)
+      | C_array a -> Swig.C_array (Array.map (swig_val t) a)
+      | _ -> Obj.magic v
+%}
+
+/*#ifndef SWIG_NOINCLUDE*/
+%insert(runtime) "ocaml.swg"
+/*#endif*/
+
+%insert(classtemplate) "class.swg"
+
+/* Definitions */
+#define SWIG_malloc(size) swig_malloc(size, FUNC_NAME)
+#define SWIG_free(mem) free(mem)
+
+/* Read in standard typemaps. */
+%include <swig.swg>
+%include <typemaps.i>
+%include <typecheck.i>
+%include <exception.i>
+%include <preamble.swg>
+
+/* ocaml keywords */
+/* There's no need to use this, because of my rewriting machinery.  C++
+ * words never collide with ocaml keywords */
+
+/* still we include the file, but the warning says that the offending
+   name will be properly renamed. Just to let the user to know about
+   it. */
+%include <ocamlkw.swg>