Mixxx crashes on startup when FlexASIO is installed

[dechamps]

See mixxxdj/mixxx#10081, PortAudio/portaudio#766.

TL;DR: this appears to be the same problem as #47, i.e. FlexASIO is being linked against an already-loaded foreign PortAudio DLL instead of the PortAudio DLL that is bundled with FlexASIO; that foreign DLL has ASIO support built-in, resulting in FlexASIO and PortAudio re-entering itself upon initialization. Hilarity ensues in the form of infinite recursion.

We need to understand why the fix for #47, i.e. b5a24c8, doesn't seem to work in this case.

[dechamps]

I am able to reproduce on a fresh Windows 11 install, Mixxx 2.3.3, and FlexASIO 1.9.

The root cause is somewhat silly: the reason why b5a24c8 doesn't work anymore is because it's including portaudio_x86.dll and portaudio_x64.dll in the manifest, but the PortAudio DLL changed in the mean time, most likely as a side effect of PortAudio/portaudio@242a024 (first included in FlexASIO 1.8) - it's now called portaudio.dll. As a result the manifest has no effect, thus resurrecting #47.

[dechamps]

This is fixed in FlexASIO 1.10, which ships with a manifest that ensures the Windows DLL loader will not share FlexASIO's portaudio.dll with any other part of the host application.