Merge branch 'master' into jgrpp

# Conflicts:
#	src/lang/korean.txt
#	src/saveload/afterload.cpp
#	src/saveload/ai_sl.cpp
#	src/saveload/game_sl.cpp
#	src/script/script_instance.cpp

src/3rdparty/squirrel/squirrel/sqstate.cpp

@@ -450,7 +450,7 @@ void RefTable::Resize(SQUnsignedInteger size)
 	SQUnsignedInteger oldnumofslots = _numofslots;
 	AllocNodes(size);
 	//rehash
-	SQUnsignedInteger nfound = 0;
+	[[maybe_unused]] SQUnsignedInteger nfound = 0;
 	for(SQUnsignedInteger n = 0; n < oldnumofslots; n++) {
 		if(type(t->obj) != OT_NULL) {
 			//add back;