Casefold the checksum algorithm

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The issues that stem from how workshop mod files are found on Linux versus on windows are honestly so annoying, It would take TIS 10 minutes to just make whatever algorithm they are using for the checksum casefolded so it doesn't freak out once some brain-dead mod creator makes the "mods" directory "Mods" or some other simple thing like that.

 

Currently when trying to get in to a new server on Linux it is like a 50/50 chance the server is using it's own mod-pack, the people maintaining that mod-pack are usually first time modders. So I have to spend 5 days corralling the owner into fixing their damn workshop mod.

 

This could be easily corrected by just making whatever system you are using for checksums casefolded

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Can we please get someone to check this over, it would be such a simple fix and it would allow Linux users to actually play your game in multiplayer. It has gotten to the point where a lot of Linux zomboid users just recommend playing the windows version of the game through proton/wine because this issue along with the pipewire issue is so annoying