pty is preferred instead of pts.

[Mats Erik Andersson <gnu@gisladisker.se>]

Dear all,

I have observed that GNU/kFreeBSD with kernel 9.0-2
returns master descriptors from the depreciated pty(4)
when calling forkpty(3), not from the expected pts(4),
which is the case for FreeBSD proper as well as
GNU/Linux. Why and how does this come about?
One negative aspect of this is that the master/slave
pair are not automatically deleted with similar ease.

Best regards,
  Mats Erik Andersson, on behalf of GNU Inetutils