merges r20917 from trunk into ruby_1_9_1. rdoc update.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21004 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Added by yugui (Yuki Sonoda) over 16 years ago
merges r20917 from trunk into ruby_1_9_1.
rdoc update.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_1@21004 b2dd03c8-39d4-4d8f-98ff-823fe69b080e