patchbomb: add content-disposition to make display inline and add filename if rev being emailed has tag that ends in .patch or .diff then use that as filename. else make up filename from name of repo.

#header#
    <title>#repo|escape#: tags </title>
    <description>#repo|escape# tag history</description>
    #entriesnotip%tagentry#
  </channel>
</rss>