normalize.rb: explicit separator
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48308 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
normalize.rb: explicit separator
use explicit separator, not to depend on $,.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48308 b2dd03c8-39d4-4d8f-98ff-823fe69b080e