Log Message:
Update ruby-json package from 1.2.0 to 1.4.2.

2010-04-26 (1.4.2)
  * Applied patch from naruse Yui NARUSE <naruse@airemix.com> to make \ 
building with
    Microsoft Visual C possible again.
  * Applied patch from devrandom <c1.github@niftybox.net> in order to \ 
allow building of
    json_pure if extensiontask is not present.
  * Thanks to Dustin Schneider <dustin@stocktwits.com>, who reported a memory
    leak, which is fixed in this release.
  * Applied 993f261ccb8f911d2ae57e9db48ec7acd0187283 patch from josh@github.
2010-04-25 (1.4.1)
  * Fix for a bug reported by Dan DeLeo <dan@kallistec.com>, caused by T_FIXNUM
    being different on 32bit/64bit architectures.
2010-04-23 (1.4.0)
  * Major speed improvements and building with simplified
    directory/file-structure.
  * Extension should at least be comapatible with MRI, YARV and Rubinius.
2010-04-07 (1.2.4)
  * Triger const_missing callback to make Rails' dynamic class loading work.
2010-03-11 (1.2.3)
  * Added a State#[] method which returns an attribute's value in order to
    increase duck type compatibility to Hash.
2010-02-27 (1.2.2)
  * Made some changes to make the building of the parser/generator compatible
    to Rubinius.
2009-11-25 (1.2.1)
  * Added :symbolize_names option to Parser, which returns symbols instead of
    strings in object names/keys.