mercurial/templates/atom/branchentry.tmpl

localrepo: add some comment about role of various vfs object

This should make things clearer for most people.

 <entry>
  <title>{branch|escape}</title>
  <link rel="alternate" href="{urlbase}{url|urlescape}rev/{node|short}"/>
  <id>{urlbase}{url|urlescape}#branch-{node}</id>
  <updated>{date|rfc3339date}</updated>
  <published>{date|rfc3339date}</published>
  <content type="text">{branch|strip|escape}</content>
 </entry>