patch 9.0.2089: sound_playfile() fails when using powershell

patch 9.0.2089: sound_playfile() fails when using powershell

Problem:  sound_playfile() fails when using powershell
Solution: quote filename using doublequotes, don't escape filename,
          because it doesn't use the shell

Avoiding powershell escaping because mci open command doesn't support
single quoted filenames: open 'C:\whatever\sound.wav' is not valid.

closes: #13471

Signed-off-by: GuyBrush <miguel.barro@live.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>