[PATCH v2 0/6] MR6630: ntdll, server: Fix various completion port scheduling issues.

[Paul Gofman (＠gofman)]

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  v2: ntdll/tests: Add tests for completion port signaling.
      kernelbase: Set the proper error code in GetQueuedCompletionStatus{Ex} when the handle is closed.
      server: Signal completion port waits on handle close.
      ntdll: Handle user APCs explicitly in NtRemoveIoCompletionEx().
      ntdll: Assign completion to thread when wait for completion is satisfied.
      ntdll: Introduce a separate per-thread object for internal completion waits.

https://gitlab.winehq.org/wine/wine/-/merge_requests/6630