New files and changes in w32api

[Corinna Vinschen]

And a bit more stuff:

While investigating the potentialities of the NT LSA interface
I created two new header files and a library stub.

- include/ntsecapi.h
- include/subauth.h
- lib/secur32.def

Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
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