add the new method append_header_value() to cgi.Request, and use it in cgi.GZipMixIn to set the Vary and Content-Encoding headers appropriately
add the new method append_header_value() to cgi.Request, and use it in
cgi.GZipMixIn to set the Vary and Content-Encoding headers appropriately

jribbens/jonpy,jribbens/jonpy