[PATCHv2] xaudio2: Add support for xactengine3

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=60077

Your paranoid android.


=== debian10 (build log) ===

../../../wine/dlls/xaudio2_7/xact_dll.c:1357:49: error: ‘XACT3_VER’ undeclared (first use in this function); did you mean ‘XACTTIME’?
Task: The win32 build failed

=== debian10 (build log) ===

../../../wine/dlls/xaudio2_7/xact_dll.c:1357:49: error: ‘XACT3_VER’ undeclared (first use in this function); did you mean ‘XACTTIME’?
Task: The wow64 build failed