[cs/java] make static constructrors protected

src/generators/gencommon/overloadingConstructor.ml

@@ -153,6 +153,7 @@ let create_static_ctor gen ~empty_ctor_expr cl ctor =
 		) cur_tf_args in
 
 		let static_ctor = mk_class_field static_ctor_name fn_type false ctor.cf_pos (Method MethNormal) ctor_types in
+		static_ctor.cf_meta <- (Meta.Protected,[],ctor.cf_pos) :: static_ctor.cf_meta;
 
 		(* change ctor contents to reference the 'me' var instead of 'this' *)
 		let actual_super_call = ref None in