Merge from HEAD:

Merge from HEAD:
 - NTLMSSP over SPENGO (sesssion-setup-and-x) cleanup and code refactor.
  - also consequential changes to the NTLMSSP and SPNEGO parsing functions
  - and the client code that uses the same functions
 - Add ntlm_auth, a NTLMSSP authentication interface for use by applications
   like Squid and Apache.
  - also consquential changes to use common code for base64 encode/decode.
 - Winbind changes to support ntlm_auth (I don't want this program to need
   to read smb.conf, instead getting all it's details over the pipe).
 - nmbd changes for fstrcat() instead of fstrcpy().

Andrew Bartlett
(This used to be commit fbb46da79cf322570a7e3318100c304bbf33409e)