forum navigation links show up in teaser

i just updated s.d.o to 5.x-dev (HEAD) to make it easier for folks to test the project* port. ignoring the fact that bluebeach isn't quite ported (or, if it is, it's not checked into the private repo), things went fairly smoothly.

*however*, there's a nearly-critical bug in forum.module now visible on the front page of s.d.o: the forum navigation links are showing up in the forum teasers. :(

IMHO, the existance of these links at all is a bug, not a feature. ;) however, it's INSANE that they're showing up in the teaser (and therefore, the front page). :( who wants a bunch of random links to random forum posts when you promote a given forum topic to the front page? it makes the site look busy, confusing, and vastly lowers the signal to noise (aka content to junk) ratio of the main view of a drupal site.

futhermore, it looks like these navigation links are generated via a fairly expensive query in the theme layer (3 INNER JOINS). i'd love a feature to turn off these links, even when viewing the full page view of a forum...

however, in the interest of getting this bug fixed, i'm keeping my patch small, only generating these links in forum_view() if we're in $teaser==FALSE mode. i'll consider waging war against these links via another issue, if i have the energy/time. ;)