Log Message:
Update from version 0.022nb1 to 0.500 (upstream 0.50):

Pkgsrc changes:
 o Canonicalize HOMEPAGE

Upstream changes:

0.50 (10.21.2008) - John Siracusa <siracusa@gmail.com>

    * Fixed a bug that caused empty query parameters to be omitted
      from the query string.
    * Added the omit_empty_query_params object attribute (with class-
      wide default override) to preserve the old behavior.