Log Message:
Update to 2.17:

2.17  Thu Jan  7 12:23:13 2010
	[JSON]
	- fixed a problem caused by JSON::XS backend and support_by_pp option
	  (rt#52842,  rt#52847 by ikegami)
	[JSON::PP]
	- made compatible with JSON::XS 2.27
	- patched decode for incr_parse (rt#52820 by ikegami)
	- relaxed option caused an infinite loop in some condition.

2.16  Fri Oct 16 15:07:37 2009
	[JSON][JSON::PP]
	- made compatible with JSON::XS 2.26
            *indent adds a final newline
	- corrected copyrights in JSON::PP58.