director string testing additions

Add test for C# based on Java example to test strings in and out.
Memory cleanup for Java test.

Examples/test-suite/csharp/director_default_runme.cs

@@ -0,0 +1,58 @@
+using System;
+
+namespace director_defaultNamespace {
+
+public class runme
+{
+  static void Main()
+  {
+    {
+      MyFoo a = new MyFoo();
+      a = new MyFoo(10);
+      a.Dispose();
+    }
+
+    {
+      MyFoo a = new MyFoo();
+      if (a.GetMsg() != "MyFoo-default") {
+        throw new Exception( "Test 1 failed" );
+      }
+      if (a.GetMsg("boo") != "MyFoo-boo") {
+        throw new Exception( "Test 2 failed" );
+      }
+      a.Dispose();
+    }
+
+    {
+      Foo b = new Foo();
+      if (b.GetMsg() != "Foo-default") {
+        throw new Exception( "Test 1 failed" );
+      }
+      if (b.GetMsg("boo") != "Foo-boo") {
+        throw new Exception( "Test 2 failed" );
+      }
+      b.Dispose();
+    }
+  }
+}
+
+public class MyFoo : Foo
+{
+  public MyFoo()
+    : base()
+  {
+  }
+
+  public MyFoo(int i)
+    : base(i)
+  {
+  }
+
+  public override string Msg(string msg)
+  {
+    return "MyFoo-" + msg;
+  }
+}
+
+}
+