[TYPO3-core] XLIFF patches

[Dominique Feyer]

Xavier Perseguers wrote:
> 
> Thanks for those. Do we agree that basically we won't ship XLIFF files
> with alpha2 as the localization server is not yet ready?
> 

Yes I think it's better.

> The problem shipping XLIFF files is that it prevents non-XLIFF files to
> be used for the translation. Idea would be to package alpha2 with XLIFF
> support but without .xlf files overriding/replacing the .xml ones.

I'm OK with that.