manuals on demand by man(1), even though a few manuals may still have
formatting issues with mandoc, and a tiny fraction may still make
mandoc error out.
Also remove the .me and .ms _build rules: we don't support these
formats any longer, and don't have any such manuals in base.
OK deraadt@ sthen@
man(1) searches, as well as from the numerical sections list, as they do
not exist
- remove the {contrib,new,old} sections, as they point to directories
that do not exist
- make the X11 section an alias for the X11R6 section (instead of
pointing to a non-existent directory)
ok millert