sys-libs/readline: Mark 8.0 stable.

BUG=chromium:1117585
TEST=CQ passes

Change-Id: Ic2dc006fee419376a27f4c05ee26e9da216e2353
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/2490409
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Reviewed-by: Navil Perez <navil@google.com>
Tested-by: Navil Perez <navil@google.com>
1 file changed