update swig on windows

winx64/bin/swigwin-4.0.0/Examples/test-suite/python/virtual_poly_runme.py

@@ -0,0 +1,38 @@
+import virtual_poly
+
+d = virtual_poly.NDouble(3.5)
+i = virtual_poly.NInt(2)
+
+#
+# the copy methods return the right polymorphic types
+#
+dc = d.copy()
+ic = i.copy()
+
+if d.get() != dc.get():
+    raise RuntimeError
+
+if i.get() != ic.get():
+    raise RuntimeError
+
+virtual_poly.incr(ic)
+
+if (i.get() + 1) != ic.get():
+    raise RuntimeError
+
+
+dr = d.ref_this()
+if d.get() != dr.get():
+    raise RuntimeError
+
+
+#
+# 'narrowing' also works
+#
+ddc = virtual_poly.NDouble_narrow(d.nnumber())
+if d.get() != ddc.get():
+    raise RuntimeError
+
+dic = virtual_poly.NInt_narrow(i.nnumber())
+if i.get() != dic.get():
+    raise RuntimeError