[tz] need testing for new tzdb release for Brazil changes

[Paul Eggert]

Deborah Goldsmith wrote:
> Any news?

I exchanged email yesterday with Oracle about this. They are currently looking 
at modifying TZUpdater to support vanguard format. Although I don't want 
TZUpdater issues to delay things unnecessarily, I thought I'd wait a bit longer 
as any TZUpdater fix (or at least clarification about if/when a fix might be 
expected) could help smooth the next tzdb release.