[conformal/btcwire] 9b7e35: Optimize transaction Deserialize.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcwire
  Commit: 9b7e3527b0a87c6b0d353ff45642cb560d2440d1
      
https://github.com/conformal/btcwire/commit/9b7e3527b0a87c6b0d353ff45642cb560d2440d1
  Author: Dave Collins <da...@conformal.com>
  Date:   2013-11-06 (Wed, 06 Nov 2013)

  Changed paths:
    M msgtx.go

  Log Message:
  -----------
  Optimize transaction Deserialize.

The benchmark results for the current commit:

Before: BenchmarkDeserializeTx    500000              4018 ns/op
After:  BenchmarkDeserializeTx    500000              3780 ns/op

The cumulative benchmark results since commit 
b7b700fd5aebb86addc93efecaa367a2f4976058:

Before: BenchmarkDeserializeTx    200000             10665 ns/op
After:  BenchmarkDeserializeTx    500000              3780 ns/op

This is part of the ongoing effort to optimize serialization as noted in
conformal/btcd#27.