[rfc] make uptrans target to merge translations (and rm powertop.pot)

[Arjan van de Ven]

Benjamin Pineau wrote:
> Hi,
> Do you think this the way to go ? (patch attached) :
> 
> This uses a make target to update your po/$LG.po translation file 
> with all new strings freshly extracted from the actual source code. 
> This won't overwrite already translated strings in the po file.
> So translators don't have to wonder how to do it anymore, and may 
> work with latest strings from svn HEAD. Just 
> 
>   svn up
>   make uptrans LG=de     # or es, it, ...
> 
> And edit you po/de.po file.
> 
> Also, obsoletes any need for the confusing and sometimes out of 
> date powertop.pot file in svn, please remove it.
> 

applied