Apply patch #2143727 for Python from Serge Monkewitz to fix importing base classes when the package option is specified in %module and that module is %import'ed

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10960 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/test-suite/packageoption_c.i

@@ -0,0 +1,13 @@
+%module(package="PackageC") "packageoption_c";
+
+%import "packageoption_a.i"
+
+%inline %{
+#include "packageoption.h"
+
+struct Derived : Base {
+  virtual int vmethod() { return 2; }
+  virtual ~Derived() {}
+};
+
+%}