update swig on windows

winx64/bin/swigwin-4.0.0/Examples/test-suite/namespace_virtual_method.i

@@ -0,0 +1,41 @@
+%module namespace_virtual_method
+
+%warnfilter(515);
+
+
+%inline %{
+
+namespace A {
+   namespace B {
+       class Foo;
+   }
+   namespace C {
+       class Foo {
+	public:
+           Foo() { };
+           virtual ~Foo() { };
+           virtual int bar(const A::B::Foo &x) = 0;
+       };
+   }
+}
+
+namespace A {
+   namespace C {
+        class Spam : public Foo {
+	public:
+            Spam() { }
+            virtual ~Spam() { }
+            virtual int bar(const B::Foo &x) { return 1; }
+        };
+   }
+}
+
+%}
+
+%{
+namespace A {
+   namespace B {
+         class Foo { };
+   }
+}
+%}