Base85 alphabet does not dearmor

[lun-4]

Since the Base85 contains a dot, and due to the code in dearmor() trying to find the second dot that finishes the message, it (most probably will) find a dot that is actually part of the armored message instead of the one that finishes the END SALTPACK MESSAGE. header.

Because of that, dearmoring a saltpack message with base85 never worked (at least from my side), and that is what I found on why it isn't working.