Permit modding of raster maps without breaking IC

[FalcoGer]

I wish to use the great maps made by flappy, which are available here

However, this breaks integrity check because the raster maps need to be placed into the core game folder.

I wish that raster maps can be placed in the user files directory ("saved games/dcs") instead and if present be loaded from there and if not, be loaded from the default location. Currently placing those files into the user files directory does nothing.

There is no reason to include those map pictures in the integrity check, because altering them doesn't allow you to cheat. It's just texture data after all that isn't useful for finding targets (like making the T-55 texture bright red, for example).

[Minhal]

Would probably also fix the issues we got with the Mi-24 and missing map sheets, as we could do custom ones from F10 "alt" mode? Currently the Mi-24 map is pretty much useless.

+1