add more link's in html output

[Per Bothner]

It would be nice if makeinfo --html could emit the various
standard <link> types, such as:
   <link rel="next" href="next-node.html"/>

Current versions of Mozilla will optionally display the
"Site Navigation Bar", including "Top", "Up", "First",
"Previous:, "Next", "Last", "Document" and "More".
I have it as "Show Only As Needed", which causes it be
be shown if there is "any" link, with the non-supplied
linked gray'd out.  Because texinfo does add the
"generator-home" link, this causes the "Site Navigation
Bar" to be displayed, with all except the More field
gray'd out.  That is unfortunate; it might be nice
to add the links.

Note I'm only mentioning Mozilla as an *example* of an
application that uses the <link>s, but since there are
standard link types *and* they seem to be intended for
texinfo-linke navigation, I think makeinfo should
generate them.

I took a look at what was involved in implementing this,
but it's not clear to me how it should be done.

(Please cc me; I'm not on this list.)
--
        --Per Bothner
address@hidden   http://per.bothner.com/