Add comments explaining why we on purpose force net001 and
net002 to fail under Win32, but don't cover up the failure in
the testscript.

net001 needs package concurrent.

Changed "expect fail" in all.T to "$expect = "fail"", which should work; the
former shouldn't work, the latter does.

Add Windows KNOWN_FAILURES.

Set some expected failures for Windows. ZBB time...

PLEASE SPLURGE

Knock this into slightly better shape and bring over some more tests
from the old test suite.