Allow booleans in hook_node_import_types/can_create

/**
 * Implementation of hook_node_import_types().
 */
function path_redirect_node_import_types() {
  return array(
    'path_redirect' => array(
      'title' => t('Path redirect'),
      'can_create' => user_access('administer redirects'), <-- Why can't we do this?
      'create' => ...
    )
  );
}

It didn't make sense why I can't just use a boolean value for can_create in hook_node_import_types(), like hook_menu(), especially if it's a simple user_access check. Patch attached for this feature.