Updating package for CPAN distribution JSON in converters/p5-JSON from
2.58nb1 to 2.59.

Upstream changes:
2.59  Wed Jun  5 14:35:54 2013
- PUREPERL_ONLY support was not supported...
    and finally remove all PP options from Makefile.PL.
- recommend JSON::XS instead of conditionally requiring it
    patched by miyagaw
  ( for example, $ cpanm --with-recommends JSON)
- Hide more packages from PAUSE (and other stuff)
    patched by miyagawa

(sno)