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

[D. Hugh Redelmeier]

New commits:
commit 8bca5286e698786d0bd766562e76758be98ec022
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Fri Apr 30 15:08:09 2021 -0400

    refcnt.h: rename O to OBJ (for readability)