void opkg_free (opkg_t *opkg);
void opkg_get_option (opkg_t *opkg, char *option, void **value);
void opkg_set_option (opkg_t *opkg, char *option, void *value);
-int opkg_read_config_files (opkg_t *opkg);
+int opkg_re_read_config_files (opkg_t *opkg);
int opkg_install_package (opkg_t *opkg, const char *package_name, opkg_progress_callback_t callback, void *user_data);
int opkg_remove_package (opkg_t *opkg, const char *package_name, opkg_progress_callback_t callback, void *user_data);
int opkg_update_package_lists (opkg_t *opkg, opkg_progress_callback_t callback, void *user_data);
int opkg_list_packages (opkg_t *opkg, opkg_package_callback_t callback, void *user_data);
+int opkg_list_upgradable_packages (opkg_t *opkg, opkg_package_callback_t callback, void *user_data);