update swig on windows

winx64/bin/swigwin-4.0.0/Examples/python/operator/example.i

@@ -0,0 +1,29 @@
+/* File : example.i */
+%module example
+#pragma SWIG nowarn=SWIGWARN_IGNORE_OPERATOR_EQ
+%{
+#include "example.h"
+%}
+
+/* This header file is a little tough to handle because it has overloaded
+   operators and constructors.  We're going to try and deal with that here */
+
+/* This turns the copy constructor in a function ComplexCopy() that can
+   be called */
+
+%rename(ComplexCopy) Complex::Complex(Complex const &);
+
+/* Now grab the original header file */
+%include "example.h"
+
+/* An output method that turns a complex into a short string */
+%feature("python:slot", "tp_str", functype="reprfunc") Complex::__str__; // For -builtin option to use __str__ in the tp_str slot
+%extend Complex {
+   char *__str__() {
+       static char temp[512];
+       sprintf(temp,"(%g,%g)", $self->re(), $self->im());
+       return temp;
+   }
+};
+
+