Log Message:
(pkgsrc)
 - Convert DEPENDS from p5-JSON to p5-JSON-MaybeXS, see below and check
   by 'make test' if you have question, thanks.
(upstream)
 - Update 0.59 to 0.60
-----------------
0.60  Jun 7, 2015
* Fixes
  - Switch JSON backends from JSON.pm to JSON::MaybeXS - \ 
https://github.com/jonswar/perl-chi/pull/20 (Karen Etheridge)