libzip: upgraded dev-libs/libzip to 1.7.1

BUG=chromium:912236
TEST=emerge-eve libzip
TEST=emerge-kevin libzip
TEST=emerge-kevin64 libzip

Change-Id: Ibb21d3f2facac3c421b5342e51d94c7fb32ed1a0
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2245845
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: François Degros <fdegros@chromium.org>
Commit-Queue: François Degros <fdegros@chromium.org>
10 files changed