ncurses: bring back ncurses-5.9

Currently, our tree only has ncurses-6, and ncurses-6 is masked in the
sdk. This means that there is no ncurses version for the sdk to compile,
resulting in sdk builds failing.

Unmasking ncurses does solve this problem for sdk builds. However,
unmasking ncurses breaks lakitu builds right now.

To get both sdk and lakitu builds working, we need the sdk to use
ncurses-5, and lakitu to use ncurses-6. We can do this by keeping the
ncurses mask in the sdk, but also bringing back the ncurses-5 ebuild.

Once COS sdk builds are fully deployed, we can move the sdk to
ncurses-6, and drop ncurses-5 from our tree.

BUG=b/177367546
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I4ed1ebfd7104b840248687fbca43317b88820bbd
Reviewed-on: https://cos-review.googlesource.com/c/third_party/overlays/portage-stable/+/29841
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-by: Vaibhav Rustagi <vaibhavrustagi@google.com>
8 files changed