Restored structure.xml generation of @version, @link, @see and their derivatives to what legacy templates expect.
In structure.xml, add back links from types to files.
In the XML writer, removed htmlspecialchars() calls in favor of a str_replace() targeting only "&", as that's the only problematic character.
Merge pull request #1003 from boenrobot/xmlwrtier-tags

More structure.xml fixes