> Copying and distribution of this file, with or without modification,
> in any medium, are permitted without royalty provided the copyright
> notice and this notice are preserved.
+ .
From modules/COPYING:
> The files in this directory describe the gnulib modules.
> The following copyright notice applies to each of these
> This file is free software; the Free Software Foundation
> gives unlimited permission to copy and/or distribute it,
> with or without modifications, as long as this notice is preserved.
-