- fix tx create from sources, input locking. Originally, creating a synthetic transactions with chaingen could create a transaction with outputs that are still locked in the current block, thus failing chain validation by the daemon. Simple unlock check was added. Some buggy tests were fixed as well as new unlock-checking version of tx creation rejected those, fixes are simple - mostly using correct block after a rewind to construct a transaction
Some tests assume the first output in a transaction goes to the recipient.
However, it can be the change. When it is, the recipient's keys will not
recognize this output. To fix this, we send all we have, to ensure there
is no change, and the first output goes to the recipient.
I'm not sure why this worked with Cryptonote. The tests sent 17 coins,
which seems way smaller than the first Bytecoin block reward, so there
would have been change too. Maybe outputs were not shuffled originally.
