forum_topic_navigation can't be repositioned.

As the forum module currently stands, the next/previous topic links are essentially hard-coded in forum_view() to appear after the first post in the thread. A themer can use theme_forum_topic_navigation() to change the look of the links themselves, but the HTML for the links will always be output directly after the content of the first post.

This is not so much a bug as it is just a bad design decision. This is problematic when trying to create a theme like phpBB/vB/etc, where the thread's first post and its replies normally look the same and don't have anything between them. A theme should be able to place them, for example, above the first post, like with breadcrumbs on the left and next/prev topic on the right.