11224 nightly and bldenv should be usable directly

*** 22,34 ****
  # Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
  # Copyright 2012 Joshua M. Clulow <josh@sysmgr.org>
  # Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
  # Copyright 2016 RackTop Systems.
  # Copyright 2019 OmniOS Community Edition (OmniOSce) Association.
! # Copyright 2019, Joyent, Inc.
  #
! # - This file is sourced by "bldenv.sh" and "nightly.sh" and should not
  #   be executed directly.
  # - This script is only interpreted by ksh93 and explicitly allows the
  #   use of ksh93 language extensions.
  
  
--- 22,34 ----
  # Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
  # Copyright 2012 Joshua M. Clulow <josh@sysmgr.org>
  # Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved.
  # Copyright 2016 RackTop Systems.
  # Copyright 2019 OmniOS Community Edition (OmniOSce) Association.
! # Copyright 2020 Joyent, Inc.
  #
! # - This file is sourced by "bldenv" and "nightly" and should not
  #   be executed directly.
  # - This script is only interpreted by ksh93 and explicitly allows the
  #   use of ksh93 language extensions.