Fixes for Linux version (including fix for mods)

[bmaupin]

I know Linux users are few and far between, but I developed a small patch to workaround the crash that happens whenever you try to play with mods in the native Linux version (not Proton). I'd love to share it more widely (like on Steam) but I'm hoping to test it with a smaller group of people first. I've tested it a bit myself but not as much as I'd like.

If anyone's interested, here it is: https://github.com/bmaupin/civ-be-linux-fixes

 

[bmaupin]

I finished a game with a mod and it worked without any problems. I also identified a couple other bugs and I added fixes for them, such as the bug where the terrain doesn't show up correctly. I'll update the post title to reflect this in case it's helpful to anyone else.