add second weapon slot, golf many tokens, remove unnecessary(?) palt …

[sparr]

if you pick up a weapon when you have just one, your current weapon will go into your alternate slot, otherwise you'll drop your current weapon just like before.

if you press the weapon pickup button when you aren't on a weapon pickup, you will swap weapons

weapons on the ground have ":123" appended to their name for 123 ammo in them.

I played through a couple of loops and didn't see any glitches from the palt() removals, but I could be missing some edge case.