[netapi32/ds] Added some stubbed ds functions

[Paul Vriens]

Anything wrong with this one? Does it need to be split up?

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Hi,

I needed one of the stubs for Process Explorer V9.25. The calls are
present in netapi32 on w2k and upwards.

I welcome any remarks or suggestions.

Changelog
  Added some stubbed Ds-calls
  Start of conformance tests for these Ds-calls.

Cheers,

Paul.