demandload: implement __call__
demandload can now load functions and classes, and not just modules.
(So if you access foo() rather than just foo.* it still works).
demandload still doesn't work for constants.
#!/usr/bin/env python
#
# An example CGI script to use hgweb, edit as necessary
import cgitb, os, sys
cgitb.enable()
# sys.path.insert(0, "/path/to/python/lib") # if not a system-wide install
from mercurial import hgweb
h = hgweb.hgweb("/path/to/repo", "repository name")
h.run()