DEPOSIT-BYTE untested before release

[RLB at MIT-MC (Richard L. Bryan)]

In octal bases,
(DEPOSIT-BYTE 1234 3 6 65) returns 1654, the correct answer.
(defun depos (a b c d) (deposit-byte a b c d))
(depos 1234 3 6 65)  returns 674, evidence of at least one fencepost error!

deposit-byte worked before the recent incompatible change (not to complain
about the change, which was necessary...)