Port Custom links to Drupal 7

Hook link goes away in drupal 7, so links are loaded in hook_node_view()
http://drupal.org/update/modules/6/7#node_links

function blog_node_view($node, $view_mode) {
  if ($node->type == 'blog') {
    if (arg(0) != 'blog' || arg(1) != $node->uid) {
      $links['blog_usernames_blog'] = array(
        // Unrelated to the change where links are added, Drupal 7 also adds a
        // format_username() function.
        'title' => t("!username's blog", array('!username' => format_username($node))),
        'href' => "blog/$node->uid",
        'attributes' => array('title' => t("Read !username's latest blog entries.", array('!username' => format_username($node)))),
      );
      $node->content['links']['blog'] = array(
        '#theme' => 'links',
        '#links' => $links,
        '#attributes' => array('class' => array('links', 'inline')),
      );
    }
  }
}