[PATCH v2 0/5] MR7137: sapi: Implement most ISpStream methods.

[Shaun Ren (＠shaunren)]

Needed for Diablo 4's screen reader.

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  v2: sapi: Implement IStream methods for SpStream.
      sapi: Implement ISpStream::GetFormat.
      sapi: Implement ISpStream::Close.
      sapi: Implement ISpStream::Set/GetBaseStream.

https://gitlab.winehq.org/wine/wine/-/merge_requests/7137