* sample/drb/README*.rdoc: [DOC] migrate DRb sample READMEs to rdoc


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42128 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* properties.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@42129 b2dd03c8-39d4-4d8f-98ff-823fe69b080e