native posix permissions

[Shirish Kalele]

So finally, to summarize, Samba would be implementing the Unix extensions
that HP has proposed while also keeping the ACL-mapping code. The CAP_UNIX
field in NegProt would determine whether Samba sends mapped ACLs or pure
unix ACLs. Users would be left free to choose and download the client
components from Gunnar or HP etc. Of course, the samba team could also
distribute one of the client implementations along with samba, or from the
samba site.

Comments, Jeremy?

- SK