Invalid amount issue when using a combination of Block core and XLite

[shrnkld]

Invalid amount Issue still persists when using a combination of Block core and XLite for other assets due to the fix/patch use of gettxout to update the amounts.

In most cases the utxo being updated will still have 0 confirmations because we just created the transaction. This isn't really an issue as long as the core wallet is run locally, the wallet will still recognise it as a "wallet transaction" and as such return the information. This doesn't appear to be the case when using xlite.

Originally posted by @shrnkld in #570 (comment)