Move our NTLMSSP client code into ntlmssp.c. The intention is to provide a

Move our NTLMSSP client code into ntlmssp.c.  The intention is to provide a
relitivly useful external lib from this code, and to remove the dupicate
NTLMSSP code elsewhere in samba (RPC pipes, LDAP client).

The code I've replaced this with in cliconnect.c is relitivly ugly, and
I hope to replace it with a more general SPENGO layer at some later date.

Andrew Bartlett
(This used to be commit b2b66909ac2e251f8189e0696b6075dbf748521a)