This is a collection of minor fixes, that I've been gathering whenever I detected something that I thought needed fixing, but that by itself seemed to small to be worth the effort of opening a JBS issue.

Summary of changes:
* Unify creation of html from markdown for all *.md files in doc.
* Move GensrcModuleInfo.gmk to gensrc directory.* Remove extraneous chars in autoconf source file header
* Update documentation for new generated build names
* Use - and not / for Windows CLI options
* Fix typos