Nicer PDFs from asciidoc

[ved-rivos]

Methods to addressing issues with asciidoc rendering such as:

1. paragraphs which split across pages - especially one line splits
2. having header of a section on last line of a page
3. Having table header on one page and rest of table on next page
4. More beautiful rendering of latexmath embedded in asciidoc

Presently this usually needs a few trials - render, inspect, insert page breaks, and repeat till it all lines up nice - till the next edit when everything gets moved around again.