Windows 10 [received support](https://devblogs.microsoft.com/commandline/af_unix-comes-to-window… for AF_UNIX sockets in Insider Build 17063. This merge request adds basic support for AF_UNIX sockets to ws2_32 and wineserver.
Of particular note is the difficulty in handling `sun_path`. Most of the functions that allow for translating Windows paths to Unix paths are not accessible from ws2_32. I considered the following options:
* Pass the Windows path to wineserver and do the conversion there.
* This is, as far as I can tell, not possible without major rearchitecting. wineserver does not have functions to translate Windows paths to Unix paths, for obvious reasons.
* Obtain the current working directory of the requesting process and temporarily change directories to there.
* This only handles relative paths and fails for absolute paths, UNC paths, etc.
* Conditionally change directories based on whether the path is relative or not.
* This is error-prone and wineserver does not have the requisite functions to do this cleanly.
I ultimately decided to pass the translated Unix path to wineserver, which changes directories to `dirname(path)`. It then provides `bind` and `connect` with `basename(path)`. This is not threadsafe, but wineserver is not (currently) multithreaded.
Abstract sockets are supported by this patch.
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v11: ws2_32/tests: Add test for AF_UNIX sockets.
https://gitlab.winehq.org/wine/wine/-/merge_requests/2786
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v2: xaudio2: Use the preprocessor to modify definitions in xaudio2.idl and xaudio2fx.idl.
xaudio2: Create XAPO objects directly from CreateAudioVolumeMeter() and CreateAudioReverb().
xaudio2: Move CreateAudioVolumeMeter() and CreateAudioReverb() to xapo.c.
https://gitlab.winehq.org/wine/wine/-/merge_requests/2918
This is to prevent NULL pointers when creating a standalone text service
that doesn't have any text set and then using functions like EM_SETSEL.
This NULL pointers doesn't happen when creating a richedit windows, because
it sets an empty text when the richedit window procedure handles the WM_CREATE event.
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v2: riched20: Set empty text by default in CreateTextServices.
https://gitlab.winehq.org/wine/wine/-/merge_requests/2941