OpenSSL::Digest class in place of where either an instance of
the class or the algorithm name was demanded. For example,
OpenSSL::HMAC.digest(OpenSSL::Digest::SHA1, key, data) is now
accepted as well as the usual
OpenSSL::HMAC.digest(OpenSSL::Digest::SHA1.new, key, data) and
OpenSSL::HMAC.digest("SHA1", key, data).
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26739 b2dd03c8-39d4-4d8f-98ff-823fe69b080e