* .gitignore: ignored unicode data with version directories.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48201 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/test_unicode_normalize.rb: added unicode version number to
  test data location.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@48202 b2dd03c8-39d4-4d8f-98ff-823fe69b080e