Added bash versions of all the map preparing and merging scripts in 'tools/mapmerge2/'. (#6929)

* 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.

tools/mapmerge2/PrepareMaps-Aurora.sh

@@ -0,0 +1,11 @@
+cd ../../maps/aurora
+
+for f in *.dmm; do
+    cp -- "$f" "${f%.dmm}.dmm.backup"
+done
+
+echo "All dmm files in the maps/aurora directory have been backed up."
+echo "Now you can make your changes."
+echo "---"
+echo "Remember to run mapmerge.sh just before you commit your changes!"
+echo "---"

tools/mapmerge2/PrepareMaps-Exodus.sh

@@ -0,0 +1,11 @@
+cd ../../maps/exodus
+
+for f in *.dmm; do
+    cp -- "$f" "${f%.dmm}.dmm.backup"
+done
+
+echo "All dmm files in the maps/exodus directory have been backed up."
+echo "Now you can make your changes."
+echo "---"
+echo "Remember to run mapmerge.sh just before you commit your changes!"
+echo "---"

tools/mapmerge2/PrepareMaps-RandomDungeons.sh

@@ -0,0 +1,11 @@
+cd ../../maps/dungeon_spawns
+
+for f in *.dmm; do
+    cp -- "$f" "${f%.dmm}.dmm.backup"
+done
+
+echo "All dmm files in the maps/dungeon_spawns directory have been backed up."
+echo "Now you can make your changes."
+echo "---"
+echo "Remember to run mapmerge.sh just before you commit your changes!"
+echo "---"

tools/mapmerge2/PrepareMaps-Runtime.sh

@@ -0,0 +1,11 @@
+cd ../../maps/runtime
+
+for f in *.dmm; do
+    cp -- "$f" "${f%.dmm}.dmm.backup"
+done
+
+echo "All dmm files in the maps/runtime directory have been backed up."
+echo "Now you can make your changes."
+echo "---"
+echo "Remember to run mapmerge.sh just before you commit your changes!"
+echo "---"

tools/mapmerge2/PrepareMaps-SpaceRuins.sh

@@ -0,0 +1,11 @@
+cd ../../maps/space_ruins
+
+for f in *.dmm; do
+    cp -- "$f" "${f%.dmm}.dmm.backup"
+done
+
+echo "All dmm files in the maps/space_ruins directory have been backed up."
+echo "Now you can make your changes."
+echo "---"
+echo "Remember to run mapmerge.sh just before you commit your changes!"
+echo "---"

tools/mapmerge2/mapmerge.sh

@@ -0,0 +1,9 @@
+export MAPROOT="../../maps/aurora/"
+export TGM="1"
+python3 mapmerge.py
+
+cd ../../maps/aurora
+
+for f in *.dmm; do
+    unix2dos $f
+done