Implement a working DOS Client32 NCP87 path using the NIOS resolver,
CONNOpenByReference and COMPATNcpRequestReply.
Add an initial FLAGDIR implementation for NetWare 386-style directory
attributes. Support Normal, System, Hidden, Delete Inhibit, Purge and
Rename Inhibit, using the same Client32 NCP87 modify/read helpers. Match
the Novell FLAGDIR display style more closely for simple mapped paths.
Also add/keep minimal TESTS coverage for the verified Client32 NCP87
attribute path.
