url: pass str to pathname2url
This is needed to appease Python 3.
This fixes test-extdata.t and test-url-download.t on Python 3
on Windows.
Differential Revision: https://phab.mercurial-scm.org/D8335
<table class="logEntry parity{parity}">
<tr>
<th class="label"><span class="age">{date|rfc822date}</span>:</th>
<th class="firstline">{desc|strip|firstline|escape|nonempty}</th>
</tr>
<tr>
<th class="revision">changeset {rev}:</th>
<td class="node"><a href="{url|urlescape}rev/{node|short}{sessionvars%urlparameter}">{node|short}</a></td>
</tr>
{parent%changelogparent}
{child%changelogchild}
{changelogtag}
<tr>
<th class="author">author:</th>
<td class="author">{author|obfuscate}</td>
</tr>
<tr>
<th class="date">date:</th>
<td class="date">{date|rfc822date}</td>
</tr>
{ifeq(phase, 'public', '', '<tr>
<th class="phase">phase:</th>
<td class="phase">{phase|escape}</td>
</tr>')}
{if(obsolete, succsandmarkers%obsfateentry)}
{if(instabilities, whyunstable%whyunstableentry)}
<tr>
<th class="files"><a href="{url|urlescape}file/{node|short}{sessionvars%urlparameter}">files</a>:</th>
<td class="files">{files}</td>
</tr>
</table>