Log Message:
Update ruby-parser package to 2.1.0.

=== 2.1.0 / 2011-08-15

* 2 minor enhancements:

  * Added new accessor canonicalize_conditions to toggle conditional \ 
canonicalization (on by default). (confused)
  * Awesome cleanup: Replaced call to append_block by block_append. (Confusion)

* 2 bug fixes:

  * Fixed handling last line of =begin/=end. (raybaxter)
  * Fixed source line numbers after heredocs. (jbarreneche)