Log Message:
Update from version 1.16 to 1.17.

Pkgsrc change:
 o Changed to JSON/ sub-dir instead of author subdir

Upstream changes:
1.17    2008-07-05
	* Added documentation indicating that allow_blessed works
	  for most useful cases (Robin Berjon)

        * Added support for obtaining the underlying representations for
          true/false in JSON.