in various places to allow extensions to define the effective language
links for a page.
$title: The page's Title.
-&$links: Associative array mapping language codes to prefixed links of the
- form "language:title".
+&$links: Array with elements of the form "language:title" in the order
+ that they will be output.
&$linkFlags: Associative array mapping prefixed links to arrays of flags.
Currently unused, but planned to provide support for marking individual
language links in the UI, e.g. for featured articles.