[conformal/btcscript] cff7f9: Fix a few comment typos.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcscript
  Commit: cff7f9704b861e8d8039bc1b7042ee1ec7a8d3f1
      
https://github.com/conformal/btcscript/commit/cff7f9704b861e8d8039bc1b7042ee1ec7a8d3f1
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-02-20 (Thu, 20 Feb 2014)

  Changed paths:
    M address.go
    M script.go
    M scriptbuilder.go

  Log Message:
  -----------
  Fix a few comment typos.