Update ruby-hpricot package to 0.8.3

= 0.8.3
=== 3 November, 2010
* GH#8: Nil-check before downcasing attribute key
* GH#25: Proper ruby 1.9 encoding support
* GH#28. Use integers instead of ?? on 1.9, which is just a string.
* including noscript to ElementInclusions , so that hpricot wont fail
  when trying to parse a meta tag inside head section when noscript is
  present.
* latest changes from fast_xs mainline
* Fixes to get Hpricot running on Rubinius:
  * Use free, not XFREE
  * Remove RSTRUCT craziness, don't break Array#at

(taca)