Log Message:
Update ruby2ruby to 2.0.7.

=== 2.0.7 / 2013-12-13

* 4 minor enhancements:

  * Add != to list of binary operators. (camertron) *le sigh*
  * Clean out cruft from process_masgn that I can't reproduce anymore.
  * Extend process_args to deal with masgn (eg: a.b { |(c, d)| ... }).
  * Extend process_masgn to deal with both sexps and var lists.

* 1 bug fix:

  * Ensure proper parens on rescue subexpressions. (Bocete)