Add the following knobs for the DocBook DSSSL stylesheets:

• WITH_INLINE_LEGALNOTICE (for HTML only): do not render <legalnotice> as a separate file if defined.
• WITH_ARTICLE_TOC: generate TOC for documents whose root element is <article> if defined.
• WITH_BIBLIOXREF_TITLE: for cross references to bibliography entries, use the title of the entry as the cross reference text, if defined.