FTBFS with glibc-2.16 (due to outdated gnulib)
coreutils doesn't build against eglibc due to outdated gnulib referring to gets which has been removed in this release.
This patch fixes that in a fairly simple-minded manner.
A better fix is a new upstream release with a newer gnulib. the 8.20 in Debian unstable is such a release. (That version needs a different fix to cross-build)