[Qt-l10n] instructions at QtLocalization

[mvillarino]

> but i wonder why you would
> want that instead of just using the downloadable ts files?

Thats easy to answer: because I am too lazy to launch a browser, point
to the right bookmark, and pick one by one the files. It's much more
confortable just writting the commands in a script and execute it. At
least, that's what I've been doing for kde for four years.

Could you let me know how to do it directly through qmake?