Torso shortcut naming

[Philippe Hurbain]

  + Codes in use by other types of torso assemblies: 973p0v uses 16369p0v, therefore 973p1r (Second assembly) -> 76382p0v

Mmhhhh   
- How do we find the available codes?
- What if LEGO later produces a 973p0v with regular arms?

Note: When in doubt, it hurts nothing to choose a pXXXX number.

Phew!