separated_version.mk: option for linux [ci skip]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56444 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
separated_version.mk: option for linux [ci skip]
specific option.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56444 b2dd03c8-39d4-4d8f-98ff-823fe69b080e