[conformal/btcutil] cef307: Complete base58 migration to new package.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcutil
  Commit: cef307c87ef28d19565e8bbb7cfffef0730d2ea4
      
https://github.com/conformal/btcutil/commit/cef307c87ef28d19565e8bbb7cfffef0730d2ea4
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-12-22 (Mon, 22 Dec 2014)

  Changed paths:
    R base58.go
    M base58/base58_test.go
    M doc.go

  Log Message:
  -----------
  Complete base58 migration to new package.