ncrypt: add some ncrypt stubs

[Sebastian Lackner]

On 12.07.2016 17:47, Alex Henrie wrote:
> +    return NTE_INVALID_PARAMETER;
> 
> I think NTE_NOT_SUPPORTED makes more sense for stub functions in this
> DLL. Other than that, the patch looks good.
> 
> -Alex
> 
> 

I also agree that a different error code might be better, however even more
important it does not compile here because there are semicolons missing in
the header file. It probably would also make sense to send the header file
changes in separate patches.