- Add WITH_DOCFORMAT_NAVI_LINK to mk/doc.docbook.mk and enable it in en_US.ISO8859-1/ and ja_JP.eucJP/.
- Add PUBLIC "-FreeBSDENTITIES DocBook Language Specific Entities//EN" and l10n.ent for entity localization.
- Use share/misc/docbook.css for indentiation of <programlisting> and <screen>.
- Add some missing $FreeBSD$.