Fix find_in_path not including some file extension logic under win32.
Windows shell resolves utility path by combining PATH, the utility name and a set of file extensions from PATHEXT.
#header#
<title>Mercurial repositories index</title>
</head>
<body>
<h2>Mercurial Repositories</h2>
The specified repository "#repo|escape#" is unknown, sorry.
Please go back to the main repository list page.
#footer#