This reverts commit 92209bf2

(I added the scaling to this action somewhere between 7-9 years ago, and somehow never knew I made this mistake until now, welp.)

Fix Lua versions of P_ZMovement and its clones as well as P_MovePlayer so tmthing changes don't linger afterwards

move P_MapEnd call in P_LoadLevel further down, so that the P_MapStart/End pair also encloses cached actions and the MapLoad Lua hook

Some of these integers exceed the precision of float. In
that case the number is rounded. The rounding shouldn't
matter too much anyway, so just shut the compiler up.

(Also remove the sprite2 check, we don't need to be that stingy since PlayerHeight hooks allow greater control over that now!)

Add some comments, write an empty string instead of a boolean determining if the bot skin exists or not.

I was a little scared of doing this at first, but after a bit of thought & some testing that it'll be fine.

Allows you to save a game as any character, and you don't have to load the files in a specific order to access the save file.