Log Message:
Update ruby-json and ruby-json-pure pacakge to 1.6.6.

2012-02-11 (1.6.6)
  * Propagate src encoding to values made from it (fixes 1.9 mode converting
    everything to ascii-8bit; harmless for 1.8 mode too) (Thomas E. Enebo
    <tom.enebo@gmail.com>), should fix
    https://github.com/flori/json/issues#issue/119.
  * Fix https://github.com/flori/json/issues#issue/124 Thx to Jason Hutchens.
  * Fix https://github.com/flori/json/issues#issue/117