convert: checkout svn root revisions
Using changed files is enough if whole history is converted. Checkouts are
required to restrict the conversion to user-supplied subtree.
#header#
<title>Mercurial Error</title>
</head>
<body>
<h2>Mercurial Error</h2>
<p>
An error occurred while processing your request:
</p>
<p>
#error|escape#
</p>
#footer#