Log Message:
Update ruby2ruby to 2.0.1.

=== 2.0.1 / 2012-11-02

* 1 bug fix:

  * Fixed dependency on alpha ruby_parser. *sigh*

=== 2.0.0 / 2012-11-02

* 1 minor enhancement:

  * Only do phase 1 testing if $SIMPLE=1.

* 1 bug fix:

  * Fixed block args processing for RP 3.0 sexp changes

=== 2.0.0.b1 / 2012-07-27

* 4 major enhancements:

  * Made it work without arglist in call.
  * Made it work without scope/block in class/module/defn/defs.
  * Removed block from resbody
  * Removed block from when node

* 4 minor enhancements:

  * Added debug task to help isolate an error
  * Empty hash is now a proper {}
  * Refactored and added finish method.
  * Switched to new Ruby18Parser to avoid deprecation warnings

* 4 bug fixes:

  * Fixed call with empty hash arg. (neilconway)
  * OMG WTF... removed long decrepit ParseTree dependency
  * Removed isolate/rake require to reduce minimum bootstrap to hoe + rake + \ 
rake install_plugins (*2)
  * Skip 1.9 tests for now.