Theming teaser search results

I've noticed that there is a difference in the way that results showing extracts and results showing teasers are displayed. Extract results are presented quite nicely as a definition list, where as teaser results are just dumps of the node teaser template. In my particular project, I needed to theme this a little better, specifically in an unordered list, which I believe should be the default layout. So I've written a patch (my first!) to theme the output. If it needs more work, please let me know but I think this is more suitable and useful than the current output formatting.