Update the SGML Primer chapter in FDP Primer:
- Eliminate a <blockquote> inside <para> (split <para> around <blockquote>)
- Use <sgmltag> markup where possible
- nsgmls does not always give error messages, just messages (those might contain information on errors)
- Eliminate first person narration
- Add missing full stops
- Add a missing <literal> markup for CDATA
Reviewed by: blackend, danger, gabor, hrs, manolis, remko, trhodes