[Unison-hackers] prompts require newline in Cygwin

[Andrew Schulman]

> If you're willing to recompile, try changing
> 
>   let supportSignals = Util.osType = `Unix (*|| Util.isCygwin*)
> 
> in uitext.ml to
> 
>   let supportSignals = Util.osType = `Unix || Util.isCygwin
> 
> and see if things improve...

Yup, that fixed it.

If you're agreeable, I'd like for you to incorporate that change upstream.
Meanwhile, for now I'll incorporate it as a patch in the existing Cygwin
packages (unison2.27, unison2.32, unison2.40).

Thank you for clearing that up.  After, what, 5 years of being bothered by
that?

Andrew.