update swig on windows

winx64/bin/swigwin-4.0.0/Examples/csharp/simple/runme.cs

@@ -0,0 +1,25 @@
+using System;
+
+public class runme
+{
+    static void Main() 
+    {
+        // Call our gcd() function
+
+        int x = 42;
+        int y = 105;
+        int g = example.gcd(x,y);
+        Console.WriteLine("The gcd of " + x + " and " + y + " is " + g);
+
+        // Manipulate the Foo global variable
+
+        // Output its current value
+        Console.WriteLine("Foo = " + example.Foo);
+
+        // Change its value
+        example.Foo = 3.1415926;
+
+        // See if the change took effect
+        Console.WriteLine("Foo = " + example.Foo);
+    }
+}