subrepo: make update -C clean the working directory for git subrepos
This makes 'hg update --clean' behave the same way for all three kinds
of subrepositories [hg, svn, git]. Before git subrepos did not take
the clean parameter into account, but just updated to the given
revision and merged uncommitted changes into that.
{header}
<title>Mercurial repositories index</title>
</head>
<body>
<h2>Mercurial Repositories</h2>
<table>
<tr>
<td><a href="?sort={sort_name}">Name</a></td>
<td><a href="?sort={sort_description}">Description</a></td>
<td><a href="?sort={sort_contact}">Contact</a></td>
<td><a href="?sort={sort_lastchange}">Last modified</a></td>
<td> </td>
</tr>
{entries%indexentry}
</table>
{footer}