Mmark recently became able to create manual pages. This removed the
dependency on 'ronn' and just uses mmark (Go program).
Re-hookup Makefile.doc to generate the correct header mmark needs to
see and regenate them all.
Spot checking a few pages suggest they look good and actually better
than rendered with ronn, esp. lists in lists.
Fixes#2757
Signed-off-by: Miek Gieben <miek@miek.nl>
* Add manual pages
Generate manual pages from the README and extend README with Name and
Description sections.
The generation requires 'ronn' which may not be available. Just check in
all generated manual pages.
