[conformal/btcscript] a6cdb8: Add tests for multisig with zero required sigs.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcscript
  Commit: a6cdb8b84452dfb0ae3f0951a529a45e9b78be77
      
https://github.com/conformal/btcscript/commit/a6cdb8b84452dfb0ae3f0951a529a45e9b78be77
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-02-19 (Wed, 19 Feb 2014)

  Changed paths:
    M script_test.go
    M test_coverage.txt

  Log Message:
  -----------
  Add tests for multisig with zero required sigs.