Merge pull request #569 from nativenolde/invalidate_cache

Allow DefaultNamingSubSystem derivatives to invalidate the cache

src/Castle.Windsor/MicroKernel/SubSystems/Naming/DefaultNamingSubSystem.cs

@@ -345,7 +345,7 @@ protected virtual IHandler GetSelectorsOpinion(string name, Type type)
 			return null;
 		}
 
-		private void InvalidateCache()
+		protected void InvalidateCache()
 		{
 			handlerListsByTypeCache.Clear();
 			assignableHandlerListsByTypeCache.Clear();