From grazcoin: invalidate tx with multiple outputs to exodus

if a transaction does not originate from exodus, do not
allow multiple outputs to exodus

example:
https://masterchain.info/simplesend.html?tx=f1a0f43f10c3af7eff7b998ef0eb82f0eb82698f3752b27486e5537895207d51
has 2 outputs of 5460 satoshi to exodus