corrupted copy in regress/multiplex.sh

[Damien Miller]

On Fri, 1 Aug 2014, Damien Miller wrote:

> On Fri, 1 Aug 2014, Damien Miller wrote:
> 
> > I'm looking at this at the moment. It happens when the test is run with
> > stdin set to /dev/null - I thought I had it figured out yesterday, but now
> > I'm not so sure...
> 
> I think this fixes it. nc was closing as soon as it saw an EOF on stdin,
> regardless of data still coming from the socket.

I committed a better fix and also a hack to disable the whole test for
systems with incompatible netcat.

-d