CHERRY-PICK: toybox: upgraded package to upstream

Upgraded sys-apps/toybox to version 0.7.2 on amd64

BUG=chromium:578956
TEST=emerge-eve toybox

Change-Id: I19efec3bdca7757db3d113eaf5dc7563d9543456
Original-Change-Id: I502847aacc120892595cce0877d7ce3ac5f82d7d
Reviewed-on: https://chromium-review.googlesource.com/443744
Reviewed-by: Wei-Han Chen <stimim@chromium.org>
Commit-Queue: Wei-Han Chen <stimim@chromium.org>
Tested-by: Wei-Han Chen <stimim@chromium.org>
4 files changed