Rename pt to pt_PT in svn

[hanyoung]

> As I wrote on the bug report:
> Let's not promise a solution which hasn't been agreed upon. Other relevant
> software in the free software world based on gettext (I've checked GNU, GNOME
> and LibreOffice) uses pt. Does it mean they are broken too? If there is an
> issue, maybe it should be solved in gettext.
>
> > Note: please reply on either MR, forum post or bug report. Forum post is preferred since I linked it to the MR and bug report (and also in source code comment)
>
>
> I concur with what Albert wrote, obviously. The discussion should take place
> here. I've added a note to the forum post to close it.
>
> --
> Luigi

Well, I can't tell the difference between European Portuguese and Brazilian Portuguese. The fix is based on the discussion in Bugzilla. Any help to investigate the root cause of the problem is appreciated.

Regards,
Han