Locales with an explicit parent locale should not inherit
the language-default locale.
For example, a correct chain for zh_Hant_MO is:
  zh_Hant_MO -> zh_Hant_HK -> zh_Hant -> root
(two fixups: zh_Hant_HK and root, so that do not inherit zh)

Fortunately, this didn't do any difference in a generated data.

Change-Id: I92e09a95bd86f8723d8fe993f57d99af6f50db5e
Reviewed-by: Lars Knoll <lars.knoll@digia.com>