readline: upgraded package to upstream

Upgraded sys-libs/readline to version 8.0_p4 on amd64

This is needed to break circular dependencies involving pkgconfg.

BUG=chromium:1117585
TEST=CQ passes

Cq-Depend: chromium:2487214
Change-Id: Iabf4fd755787d9f48efef3dc7539596934bcddb9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2360512
Tested-by: Allen Webb <allenwebb@google.com>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
10 files changed