fixes for director class naming when nested classes are used

Examples/test-suite/csharp/nested_directors_runme.cs

@@ -0,0 +1,20 @@
+using System;
+using nested_directorsNamespace;
+#pragma warning disable 219
+
+public class CNested : Base.Nest {
+	public override bool GetValue() {return true;}
+}
+public class CSub : Sub {
+	protected override bool GetValue() { return base.GetValue(); }
+	public bool Test(){ return GetValue(); }
+}
+
+public class runme {
+  static void Main() {
+  	CNested n = new CNested();
+		CSub s = new CSub();
+		if (!s.Test())
+			throw new Exception("Sub.GetValue");
+  }
+}