Provide errno-translation wrappers around bind() and listen() on Windows.

I've seen one too many "could not bind IPv4 socket: No error" log entries
from the Windows buildfarm members.  Per previous discussion, this is
likely caused by the fact that we're doing nothing to translate
WSAGetLastError() to errno.  Put in a wrapper layer to do that.

If this works as expected, it should get back-patched, but let's see what
happens in the buildfarm first.

Discussion: <4065.1452450340@sss.pgh.pa.us>

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