Subject: FYI: updated copyright dates, and gnulib

From: Jim Meyering <[email-masked]>
Date: Wed, 03 Jan 2018 16:47:24 -0800

pushed at
https://git.savannah.gnu.org/cgit/gzip.git/commit/?id=975508caa09d733099498ff9f7b8079cd71d7109