Cannot handle multilingual text unit references when they are called from inline codes

[Former user]

Original [issue 11](https://code.google.com/p/okapi/issues/detail?id=11) created by @ysavourel on 2009-03-04T17:35:20.000Z:

The GenericSkeletonWriter cannot handle multilingual text unit references when they are called from inline codes.

The language of the reference tu is used instead of the output language of the text fragment the inline code is in, so we always get the source text.