converted smbd to use NTSTATUS by default
major changes include:
- added NSTATUS type
- added automatic mapping between dos and nt error codes
- changed all ERROR() calls to ERROR_DOS() and many to ERROR_NT()
these calls auto-translate to the client error code system
- got rid of the cached error code and the writebmpx code
We eventually will need to also:
- get rid of BOOL, so we don't lose error info
- replace all ERROR_DOS() calls with ERROR_NT() calls
but that is too much for one night
(This used to be commit
83d9896c1ea8be796192b51a4678c2a3b87f7518)