Document language

[Akim Demaille]

The fact that Texinfo relies on LC_* for documents causes the test
suite to fail on my machine.  The test suite should probably unset
LC_* before being run.

texinfo/makeinfo/tests % sh -x ./copying                         nostromo Err 2
+ unset TEXINFO_OUTPUT
+ : .
+ ../makeinfo -o copying.out ./copying.txi
+ fgrep 'produced by' copying.out
+ exit 2
texinfo/makeinfo/tests % cat copying.txi                         nostromo Err 2
\input texinfo   @c -*-texinfo-*-
@copying
@end copying
@bye
texinfo/makeinfo/tests % cat copying.out                         nostromo 14:11
Ceci est le fichier Info copying.out, produit par Makeinfo version 4.7
à partir ./copying.txi.