EAC process doesn't cleanly exit when application is closed

[Lyle-Tafoya]

Currently it is necessary to force kill EAC and any other lingering .exe and wineserver processes whenever an EAC-enabled game is closed.

[Guy1524]

Yes, this is due to EasyAntiCheat.sys co-opting dllhost.exe and never closing it. The best solution for this should be to mark dllhost.exe a system process. However, I'll need to do it before LdrInitializeThunk, as after that point the process is in EAC's hands.