These host tools compile but may crash at runtime when building on
macOS 10.13 (High Sierra). Backport upstream gnulib patch until new
releases of affected tools.
https://lists.gnu.org/archive/html/bug-gnulib/2017-07/msg00056.html
https://git.savannah.gnu.org/cgit/gnulib.git/commit/?id=
c41f233c4c38e84023a16339782ee306f03e7f59
Signed-off-by: Ryan Mounce <ryan@mounce.com.au>