Mac/Linux Specific Changes are:
    Fix crash during transitions on older graphics hardware
    Fix case-sensitivity issues when loading certain mods & files.
    Fix directory traversal code to work properly on 64-bit filesystems such as JFS.
    Added easy-access button in Mods menu to open the game-folder for creating mods.
    Added cleaner mod integration - easy install (for non-steam workshop mods
        - on Mac OS X - dragging a mod ".zip" onto the game icon