update swig on windows

winx64/bin/swigwin-4.0.0/Examples/octave/functor/example.i

@@ -0,0 +1,26 @@
+/* File : example.i */
+%module swigexample
+
+%feature("autodoc", 1);
+
+%inline %{
+// From B. Strousjoup, "The C++ Programming Language, Third Edition", p. 514
+template<class T> class Sum {
+   T res;
+public:
+   Sum(T i = 0) : res(i) { }
+   void operator() (T x) { res += x; }
+   T result() const { return res; }
+};
+
+%}
+
+// Rename the application operator to __call__ for python.
+// Note: this is normally automatic, but if you had to do it yourself
+// you would use this directive:
+//
+// %rename(__call__) *::operator();
+
+// Instantiate a few versions
+%template(intSum) Sum<int>;
+%template(doubleSum) Sum<double>;