Lighttpd

In the mod_dirlisting module the Content-Type header is inserted and not overwritten, this can lead to a situation where we have more than one Content-Type header (at least that happened for us) and for some reason Internet Explorer 7 (possible v6 also) only reads the first one (stupid browser indeed).

The included patch changes this to an overwrite instead so we can make sure that there will only by one Content-Type header in the response.