Search module and keyword tokens

We added search module tokens to opensearch.module, and we can probably move most of them into token.module since its a core module.

/**
 * Implements hook_token_list().
 */
function opensearch_token_token_list($type = 'all') {
  $tokens = array();

  if ($type == 'search' || $type == 'all') {
    $tokens['search']['search-keywords'] = t('The keywords of the current search request.');
    $tokens['search']['search-keywords-raw'] = t('The unfiltered keywords of the current search request.');
    $tokens['search']['search-module'] = t('The module handling the search routine.');
    $tokens['search']['search-name'] = t('The title of the search routine.');
    $tokens['search']['search-path'] = t('The URL alias of the search page.');
    $tokens['search']['search-url'] = t('The absolute URL of the search page.');
  }

  return $tokens;
}

/**
 * Implements hook_token_values().
 *
 * @param $object
 *   The module name of the search routine.
 */
function opensearch_token_token_values($type, $object = NULL, $options = array()) {
  $values = array();

  if ($type == 'search') {
    $name = module_invoke($object, 'search', 'name');
    $values['search-keywords-raw'] = trim(search_get_keys());
    $values['search-keywords'] = check_plain($values['search-keywords-raw']);
    $values['search-module'] = $object;
    $values['search-name'] = $name;
    $values['search-path'] = drupal_get_path_alias("search/$object");
    $values['search-url'] = url($values['search-path'], array('alias' => TRUE, 'absolute' => TRUE));
  }

  return $values;
}