message: syntax/license: add the unicode license for unicode-tables
  Add the Unicode license to the unicode-tables directory, as the data
  there comes from the Unicode Consortium.
  Fixes
diff: @@ -232,3 +232,7 @@ This project is licensed under either of
  http://opensource.org/licenses/MIT)
  at your option.
  +
  +The data in `regex-syntax/src/unicode_tables/` is licensed under the Unicode
  +License Agreement
  +([LICENSE-UNICODE](http://www.unicode.org/copyright.html#License).
  