* Make G_SetGameModified only console-print for major mods.
* Add amnesty to "major mod" detection while loading files with custom savedatas.
* Improved the console prints for command `isgamemodified`.
* Add missing vars highlightflags, recommendedflags, warningflags from Kart
* V_GetStringColormap() use vanilla behavior because Kart behavior glitches for us
* V_GetStringColormap() made non-static