tree->version++;
}
-void vlist_add(struct vlist_tree *tree, struct vlist_node *node, void *key);
+void vlist_add(struct vlist_tree *tree, struct vlist_node *node, const void *key);
void vlist_delete(struct vlist_tree *tree, struct vlist_node *node);
void vlist_flush(struct vlist_tree *tree);
void vlist_flush_all(struct vlist_tree *tree);