Cosa è cambiato in EDuke32, build per build

* Don't call ALSADrv_MIDI_ListPorts() from driver_alsa.cpp. There is no need to do this as ALSADrv_MIDI_Init() just connects to the client and port specified and succeeds or fails accordingly. * Remove nullDevice vector from driver_alsa.cpp. Calculate whether returned vector from ALSADrv_MIDI_ListPorts() is null or not within game's menu and handle accordingly. * Remove static declaration of validDevices from driver_alsa.cpp. Vector is of no use inside of driver_alsa.cpp and is only required game-side. * Return declaration of devices found back to ALSADrv_MIDI_ListPorts() and return whether it's empty or not. * Declare alsadevices as an empty non-constant in menus.cpp, then populate from Menu_RefreshSoundProperties() in menus.cpp. This allows us to fill alsadevices with an empty vector if no devices found and allows a user to plug new MIDI devices in and have the game find them without restarting the game.

- Issues requiring glFinish() aren't really apparent on Linux, therefore not needed. - Running glFinish() can have an detrimental impact of Polymer users depending on whether they use the HRP or not.

- glFinish() after swapping stabilises stuttering issues and has minimum performance impact. - glFinish() before swapping stabilises should be better but sometimes isn't, and is needed for KMT not to tear. Offer as an option.

as one more step before tying input to frame rate.