Make clean removes:

doc/contributing.fr.texi

doc/guix.fr.texi

We had a discussion on #guix with roptat, and a few others.

I have found out, that after removing $(TRANSLATED_INFO)

from $(BUILT_SOURCES) in doc/local.mk these files are not

deleted any more. I have doubts that this is a correct fix, as

this might break dependency resolution.

I also noticed, that after running make these two files end up with different content.

If you think this fix is ok, I will send a patch.