mpm@selenic.com [Wed, 25 May 2005 16:21:06 -0800] rev 157
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.