Normalization test iff UTF-8 file system
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55446 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Normalization test iff UTF-8 file system
normalization is meaningless unless file system encoding is UTF.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55446 b2dd03c8-39d4-4d8f-98ff-823fe69b080e