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

[Andrew Cagney]

New commits:
commit 3df61b081fcaefae91a7611184d0c3dc0ae82837
Author: Andrew Cagney <cagney at gnu.org>
Date:   Mon Mar 5 12:32:02 2018 -0500

    chunks: replace chunk_clone() with clone_chunk()
    
    Handle empty_chunk.