[devtools] make return value of get_response_header(raw=True) consistent wrt get_header(raw=True)
i.e. get_response_header(raw=True) now returns the first element of the list rather
than the list itself.
# copyright %(year)s %(author)s, all rights reserved.# contact %(author-web-site)s -- mailto:%(author-email)s#%(long-license)s"""%(distname)s schema"""