[RFC] Improve testsuite for poor expect behavior

[Joel Brobecker]

> +#ifdef _WIN32
> +  /* A Cygwin ssh session may not look like a terminal to the Windows
> +     runtime; ensure unbuffered output.  */
> +  setvbuf (stdout, NULL, _IONBF, BUFSIZ);
> +  setvbuf (stderr, NULL, _IONBF, BUFSIZ);
> +#endif

We have the exact same piece of code in our tree as well. We chose
to put it in event-top, but it doesn't really matter.  I'd really
like to see at least this part being committed.

-- 
Joel