message: Change value limit back to MAX_MONEY
  The maximum amount in the helper function AmountFromValue was changed in
  Bitcoin and merged into Peercoin, but Peercoin doesn't have the
  21 millions limit.
diff: @@ -99,7 +99,7 @@ void RPCTypeCheck(const Object& o,
  int64 AmountFromValue(const Value& value)
  {
  double dAmount = value.get_real();
  - if (dAmount <= 0.0 || dAmount > 21000000.0)
  + if (dAmount <= 0.0 || dAmount > MAX_MONEY)
  throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
  int64 nAmount = roundint64(dAmount * COIN);
  if (!MoneyRange(nAmount))
  