Ensure that after collecting all missile chests, in any order,
the player will have 54 missiles in the end.
Previously, this number could be 49 (if the +24 chest was collected
first) or 59 (if the Super Missile chest was collected first).
Also fixes the bug where collecting the Super Missile Launcher
as the first missile chest causes the hidden missile drops in
e.g. Egg Corridor and Waterway to never spawn.
- mr little and chaba now check whether you've picked up the blade or fireball, not whether you have them in your inventory
- you can now pick up mr little without speaking to his wife
- you can now drop off/pick up your bubbler at arthur's arsenal