[RFC] Improve testsuite for poor expect behavior

[Mark Kettenis]

> Date: Wed, 17 Jun 2009 16:18:43 -0700
> From: Joel Brobecker <brobecker@adacore.com>
> 
> > >   Could we use something that would also work for Win64 compilation?
> > 
> > Sure, if you tell us what it is - I figured _WIN32 still worked.
> 
> As far as I can tell, _WIN32 *is* defined for Win64 as well.

Ah brilliant!  Another reason we should try to avoid using #ifdef
_WIN32 and the likes in generic GDB code.