Add inforbefore.txt providing instructions before installation for Windows
FGCom: change default silence threshold
Increase required CMake version
Show Qt paths in CMake
Revert "Altimeter: fix output format for hPa/InHg settings"
Altimeter: fix output format for hPa/InHg settings
Win-nightly: add firewall exception by elgaton
Update /sim/startup/fullscreen prop at runtime, that way we know the current state of the window