[PATCH v3 1/6] wmp: Implement playback via quartz

[Anton Romanov]

This revision now uses unsafe_impl_from_IWMPMedia for WMPControls_play
and only starts media event listener thread if all quartz calls
succeeded in wmpcontrols_play.

With this series WPF's MediaPlayer class is now working (apart from
yet unimplemented things) and makes apps that use it have sound
Eg Magic The Gathering: Online  (
https://appdb.winehq.org/objectManager.php?sClass=version&iId=32007 )