Ruby

• hash.c (rb_any_hash): fixed performance issues with nil, true,
  false as hash keys. a patch from Matthias Waechter.
  [ruby-core:21568]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@21785 b2dd03c8-39d4-4d8f-98ff-823fe69b080e