[Translators] pt_BR not found.

[Sidney Doria]

Hello there,

I can see lots of languages in the transifex strings from #946 to
#1111, but there is no Brazilian Portuguese (pt_BR).

Also, VLC' Audio menu, in  "Audio Track", when in English, the track
is shown "Track 1 - [English]", but when in Brazilian Portuguese, it's
shown as "Trilha 1 - [Fluxo %s]" .

"Fluxo" = "Stream" and I believe that's a bug, in the absence of a
match, another (random) string is being shown.

-- 
Sidney Doria

"Não é importante a rapidez com que se aprende, mas sim que se aprenda."
(Mestre dos Magos no episódio A Névoa da Escuridão)