Function krb5_sys::krb5_appdefault_boolean

pub unsafe extern fn krb5_appdefault_boolean(context: krb5_context,
                                             appname: *const c_char,
                                             realm: *const krb5_data,
                                             option: *const c_char,
                                             default_value: c_int,
                                             ret_value: *mut c_int)