* Added bash versions of all the map preparing and merging scripts in 'tools/mapmerge2/'.
* Renamed all Linux map preparation bash scripts.
* All Linux map preparation bash scripts now assume the file is being executed from the mapmerge2 directory, making the same assumption the .bat files make.
* The map merge Linux bash script now assumes the script is being run from the mapmerge2 directory, making the same assumption the .bat file makes.
