Bug fix. <Module> should not extend object.

reflect/Emit/TypeBuilder.cs

@@ -661,11 +661,14 @@ namespace IKVM.Reflection.Emit
 			{
 				this.ModuleBuilder.AddDeclarativeSecurity(token, declarativeSecurity);
 			}
+			if (!IsModulePseudoType)
+			{
 				Type baseType = this.BaseType;
 				if (baseType != null)
 				{
 					extends = this.ModuleBuilder.GetTypeToken(baseType).Token;
 				}
+			}
 			if (interfaces != null)
 			{
 				foreach (Type interfaceType in interfaces)