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

[D. Hugh Redelmeier]

New commits:
commit 199ac9a7405ee86013941b7627a38f77b060dec5
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Sat Jan 19 10:53:49 2019 -0500

    EMPTY_CHUNK: add const qualifier to type of EMPTY_CHUNK
    
    Since a C compound literal is an object, it can be modified.
    EMPTY_CHUNK expands into a compound literal.
    In theory, every use of EMPTY_CHUNK creates a distinct object.
    Adding "const" to the type signals the compiler and the
    programmer that these objects cannot and must not be modified.