[conformal/btcscript] 61d270: Add HasCanonicalPushes

[David Hill]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcscript
  Commit: 61d270957e5bc13934a17f2d7b4daee93d4f9bad
      
https://github.com/conformal/btcscript/commit/61d270957e5bc13934a17f2d7b4daee93d4f9bad
  Author: David Hill <dh...@conformal.com>
  Date:   2014-02-19 (Wed, 19 Feb 2014)

  Changed paths:
    M script.go
    M script_test.go

  Log Message:
  -----------
  Add HasCanonicalPushes

Closes #6.

ok @davecgh