[PATCH 2/6] winex11.drv: Use process-wide AppUserModelID to populate WM_CLASS

[Vincent Povirk]

> +        char fallback_prefix[] = "Wine.Fallback.";

Is there a good reason not to use the path as-is in this case? Windows
apps don't see the value of WM_CLASS, after all.

I agree that using the full path rather than the basename is the
correct approach, although you haven't made it obvious why. In my
testing, the Windows taskbar would distinguish between executable
files with the same name in a different directory.

Can the AppUserModelID be changed after a window is first shown? If
so, we'll want a mechanism to notify the user driver of changes.