mercurial/templates/raw/graphnode.tmpl

encoding: move case-related utils up

This will be useful for the next commit that needs this code earlier.

Differential Revision: https://phab.mercurial-scm.org/D11024

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}