[conformal/btcwallet] ef6aa9: Refactor Wallet.txToPairs into smaller functions

[Guilherme Salgado]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcwallet
  Commit: ef6aa91b6aff890d5ade641591378291ea0d6f61
      
https://github.com/conformal/btcwallet/commit/ef6aa91b6aff890d5ade641591378291ea0d6f61
  Author: Guilherme Salgado <gsalg...@gmail.com>
  Date:   2014-07-31 (Thu, 31 Jul 2014)

  Changed paths:
    M createtx.go
    M createtx_test.go
    A createtx_test_disabled.go

  Log Message:
  -----------
  Refactor Wallet.txToPairs into smaller functions

Also add a unit test for one of them.