user auth patches

[Ralf Habacker]

Havoc Pennington schrieb:
> Hi,
>
> abstract the user auth a bit more and allow there to be no unix user.
>
> The Windows port is broken for the moment, but it should now be possible
> to delete all the code for emulating dbus_uid_t/dbus_gid_t on Windows.
> If it isn't let me know where it's still needed.
dbus-sysdeps-unix.h should not be included in windows, but it is 
included in dbus-userdb.c and dbus-userdb-util.c. Should these files are 
completly removed from the windows build ?


Ralf