gnupg: upgraded package to upstream

Upgraded app-crypt/gnupg to version 1.4.21 on amd64

BUG=chromium:845281
TEST=emerge-caroline app-crypt/gnupg

Change-Id: I1b8c0d0e45fcaf04454bf34e0c35c07604c9cb96
Reviewed-on: https://chromium-review.googlesource.com/1067704
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Dhanya Ganesh <dhanyaganesh@google.com>
Reviewed-by: Jason Clinton <jclinton@chromium.org>
4 files changed