git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@30028 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merges r29407 from trunk into ruby_1_9_2.¶
accepts only Strings, so call Integer#to_s(16).
16 is for an optimization. [ruby-dev:42336]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@30028 b2dd03c8-39d4-4d8f-98ff-823fe69b080e