[PATCH v2 0/5] MR2524: msvcrt: _StructuredTaskCollection cancelling

[Torge Matthies (＠tmatthies)]

Some refactoring + implementation of `_StructuredTaskCollection::_Cancel` and `_StructuredTaskCollection::_IsCanceling`.

--
  v2: msvcr100: Implement _StructuredTaskCollection::_IsCanceling.
      msvcr100: Implement _StructuredTaskCollection canceling.
      msvcr100: Use enum for _StructuredTaskCollection status bits.
      msvcr100: Use enum for _StructuredTaskCollection return value.
      msvcr100: Only wake task collection waiters when finished >= count.

https://gitlab.winehq.org/wine/wine/-/merge_requests/2524