-forward_down fixes

init.lua

scripts/avl_tree~.lua

scripts/battle_minesweeper.lua

scripts/blackbox.lua

scripts/blackbox_game.lua

scripts/hash_table_implementation.lua

scripts/messenger.lua

scripts/minesweeper.lua

scripts/minesweeper_game.lua

scripts/radix_sort.lua

scripts/serialization.lua

scripts/shop.lua

scripts/simple_layout_gen.lua