In the upgrade from ruby 1.8.6 to 1.8.7, the PLISTs changed
due to differences in how RDoc processes files.
This also has a number of changes to the regress tests to
work with the changes to devel/ruby-rake. It moves most of
the regress tests to use MODRUBY_REGRESS.
OK jcs@, landry@, jasper@, sthen@
ParseTree is a C extension (using RubyInline) that extracts the parse
tree for an entire class or a specific method and returns it as a
s-expression (aka sexp) using ruby's arrays, strings, symbols, and
integers.
