mercurial/templates/raw/graphnode.tmpl

store: change `_walk` return to `(filename, (type, size))`

If we are to group file per revlog, having the filename as the "main key" will be useful. This change will make the following changes clearer.

changeset:   {node|short}
user:        {author|person}
date:        {date|age}
summary:     {desc|firstline|nonempty}
{branches%branchname}{tags%tagname}{bookmarks%bookmarkname}
node:        ({col}, {row}) (color {color})
{edges%graphedge}