[conformal/btcscript] 2005fa: Change OP_CHECK_MULTISIG -> OP_CHECKMULTISIG.

[Dave Collins]

  Branch: refs/heads/master
  Home:   https://github.com/conformal/btcscript
  Commit: 2005fae90834a88c31281ecf04cf697aba9d0d1e
      
https://github.com/conformal/btcscript/commit/2005fae90834a88c31281ecf04cf697aba9d0d1e
  Author: Dave Collins <da...@conformal.com>
  Date:   2014-01-04 (Sat, 04 Jan 2014)

  Changed paths:
    M address.go
    M address_test.go
    M internal_test.go
    M opcode.go
    M opcode_test.go
    M script.go
    M script_test.go

  Log Message:
  -----------
  Change OP_CHECK_MULTISIG -> OP_CHECKMULTISIG.

This change was made to match the reference implementation.