[PATCH v2 0/9] MR803: winegstreamer: Refactor wm async reader clock.

[Rémi Bernon]

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  v2: winegstreamer: Request the wm_reader stream only when necessary.
      winegstreamer: Introduce a new async_reader_wait_pts helper.
      winegstreamer: Factor async_reader waits using async_reader_get_wait_timeout.
      winegstreamer: Check whether the reader is still running before user time.
      winegstreamer: Keep start time in the async_reader struct.
      winegstreamer: Implement async reader asynchronous seeking.
      winegstreamer: Unconditionally assign new context for ASYNC_OP_START.
      winegstreamer: Wrap async reader op new_context in a union.
      wmvcore/tests: Add some tests starting WM reader with NULL context.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/803