[Localization] Updating the Qt4 Portuguese files to Qt5

[Oswald Buddenhagen]

On Tue, Jan 07, 2020 at 04:12:18PM +0100, Pedro Barros wrote:
>Going through the list of files in http://l10n-files.qt.io/l10n-files/, 
>I only see files with "zero completion status", which I take as an 
>indication that these are Qt4 files.
>
that would be correct.

>I would like to convert them to Qt5, but following the warnings on the 
>site, I would like to know:
>
>a) are these the right files, or not?
>
they are.

>b) Is there a more or less complete instruction on the workflow to be 
>followed?
>
not more than what leena pointed to.

i updated the wiki to reflect that we now have LTS branches, which are 
the preferred first target for translation. currently, that would be 
5.9.

>Any tips, advice or suggestions on how to simplify this process will be 
>highly welcome.
>
you may want to take 
https://codereview.qt-project.org/c/qt/qttranslations/+/214867 as a 
basis and "de-brazilianize" it.
you can use lconvert to "forward-port" the pt_BR translation targeting 
5.6 to the current 5.9 pt_PT files.