<?php

/**
 * implementation hook_menu_alter();
 * @param unknown_type $items
 */
function node_clone_tab_menu_alter(&$items) {
  // Change node clone menu item to a tab instead of an action
  if(isset($items['node/%node/clone/%clone_token'])) {
    $items['node/%node/clone/%clone_token']['type'] = MENU_LOCAL_TASK;
  } else {
    $items['node/%node/clone']['type'] = MENU_LOCAL_TASK;
  }
}