Upgrade path for global nodeword settings is missing

DEV does not fix the below upgrade bug. After global settings have been added back - the update hook need to upgrade all data and should not DELETE the settings!

function nodewords_update_6102() {
  $ret[] = update_sql("DELETE FROM {variable} WHERE name = 'nodewords_global'");
  drupal_set_message(t('The default meta tags values have been reset; you can change them in the <a href="@settings_page">module settings page</a>.', array('@settings_page' => url('admin/content/nodewords/global/default'))));

  return $ret;
}