Function krb5_sys::krb5_appdefault_string

pub unsafe extern fn krb5_appdefault_string(context: krb5_context,
                                            appname: *const c_char,
                                            realm: *const krb5_data,
                                            option: *const c_char,
                                            default_value: *const c_char,
                                            ret_value: *mut *mut c_char)