[PATCH v2 0/4] MR8055: coremessaging: Partially implement CreateDispatcherQueueController(). (alt)

[Rémi Bernon]

Supersedes !7928 with some test tweaks:

* Test that shutdown waits for any queued handler,
* Use message loop only when necessary (DQTYPE_THREAD_CURRENT),
* Remove some non-deterministic refcount checks after shutdown, as dispatch thread might still hold some until it exits.

--
  v2: coremessaging: Partially implement CreateDispatcherQueueController().
      coremessaging/tests: Add CreateDispatcherQueueController() tests.
      coremessaging/tests: Add IDispatcherQueueControllerStatics::CreateOnDedicatedThread() tests.
      coremessaging: Add IDispatcherQueueControllerStatics stub.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/8055