Add director_nested_class testcase

Java nested director class test for fix in e7db081d5e

Examples/test-suite/director_nested_class.i

@@ -0,0 +1,16 @@
+%module(directors="1") director_nested_class
+
+
+%feature("director") DirectorOuter::DirectorInner;
+
+%inline %{
+struct DirectorOuter {
+  struct DirectorInner {
+    virtual ~DirectorInner() {}
+    virtual int vmethod(int input) const = 0;
+  };
+  static int callMethod(const DirectorInner &di, int value) {
+    return di.vmethod(value);
+  } 
+};
+%}

Examples/test-suite/java/director_nested_class_runme.java

@@ -0,0 +1,30 @@
+
+import director_nested_class.*;
+
+public class director_nested_class_runme {
+
+  static {
+    try {
+      System.loadLibrary("director_nested_class");
+    } catch (UnsatisfiedLinkError e) {
+      System.err.println("Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e);
+      System.exit(1);
+    }
+  }
+
+  public static void main(String argv[]) {
+
+      director_nested_class_Derived d = new director_nested_class_Derived();
+
+      if (DirectorOuter.callMethod(d, 999) != 9990) {
+          throw new RuntimeException("callMethod(999) failed");
+      }
+  }
+}
+
+class director_nested_class_Derived extends DirectorOuter.DirectorInner {
+    public int vmethod(int input) {
+        return input * 10;
+    }
+}
+