WIP: Ncurses update

This updates to the current patched version of ncurses.

This supposedly fixes a bug in building on arm64 for: https://gitlab.com/gitlab-org/omnibus-gitlab/issues/1625

I did try the non-patched 6.0 release, but it does not compile on Debian 9.

Test packages available here: https://dev.gitlab.org/gitlab/omnibus-gitlab/pipelines/56365

ncurses changed a bunch of it's defaults in 6, so it is likely that this has broken something, if the libs we use that depend on it haven't been updated to support it yet.

We would need to test these packages on each platform before turning this MR as non-WIP.

patch specific changes to ncurses: http://invisible-island.net/ncurses/NEWS.html

cc\ @elraro