sysutils/screen-ncurses port

[Slawa Olhovchenkov]

On Thu, Apr 30, 2020 at 03:04:49PM +0200, Baptiste Daroussin wrote:

> > > This way ports with random termcap info to add would be able to do it witho=
> > > ut
> > > the requirement to wait for a commit in base and a MFC.
> > 
> > This is probably outside of my scope at the moment but, yes, agreed.
> > 
> I will then.
> I added that to my TODO

Can you also see at termcap/ncurses related code?
Latest commit in base do unusable sh/tcsh  w/ emacs
tramp mode and inside screen.

And paste from screen too (many unneed trailing space from lines).