GtkListStore->insert()

As a follow up to my earlier message, I have made an attempt to make GtkListStore::insert work like append and prepend. I don't really know what I am doing but this worked for me. Please let me know if I am wasting my time because a) you don't want to override these methods or b) this is the saddest piece of code you have ever seen. If this patch is helpful I will try to override insert_after and insert_before. Thanks, Scott