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 repository not found</title>
</head>
<body>
<div class="page_header">
<a href="http://mercurial.selenic.com/" title="Mercurial" style="float: right;">Mercurial</a> Not found: {repo|escape}
</div>
<div class="page_body">
The specified repository "{repo|escape}" is unknown, sorry.
<br/>
<br/>
Please go back to the <a href="{url}">main repository list page</a>.
</div>
{footer}