[tex-live] tl2016,tl2018: broken psnup shipped

[Akira Kakuto]

Dear Reuben,

> I think given the circumstances, the change you suggest is
> therefore a sensible one. As far as I know, texlive is the
> only software distribution shipping up-to-date psutils,
> so no need for me to make an interim release.

Many thanks. I have applied the patch in r48528.
The binary based on the patch will be distributed in
TeX Live 2019, in the case that the new perl version
is not present.

Best,
Akira