Fixes running 'hg serve' with Windows executable and no explicit template path configured.
PY2EXE executables don't support __file__ but do place the directory of the
shared code library into sys.prefix.
Fixes bug 152.
#!/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()