Ruby

• enum.c (enum_to_a): Pass arguments through to #each().
  (enum_sort): Follow the enum_to_a signature change.
  (enum_reverse_each): Add #reverse_each().

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@16639 b2dd03c8-39d4-4d8f-98ff-823fe69b080e