[Swan-commit] Changes to ref refs/heads/master

[D. Hugh Redelmeier]

New commits:
commit d745bf5656955abf0da6353cfe65759770746038
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Sat May 25 14:17:36 2019 -0400

    shell scripts: a few more improvements inspired by Coverity SHELLCHECK_WARNING
    
    - replace `foo` with $(foo)
    
    - elimintate "for dummy" construct
    
    - eliminate some wc invocations
    
    - much more to do