Install the templates where they can be found by hgweb.py
This ought to use package_data but that doesn't exist in Python 2.3.
So we do a hack of install_data and use glob.
This also adds templatepath() to hgweb.py which finds the templates
relative to hgweb.py's location.
#header#
<title>#repo#: changelog</title>
</head>
<body>
<h2>changelog for #repo#</h2>
navigate: #changenav#<br>
#entries#
navigate: #changenav#<br>
#footer#