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

[Andrew Cagney]

New commits:
commit 23ac09a67dea13c7ce12e67f62ee8db5960e6244
Author: Andrew Cagney <cagney at gnu.org>
Date:   Sun Oct 15 10:07:38 2017 -0400

    state: change struct state_entry into a true double linked list
    
    so that the list can be traversed both young-to-old and old-to-young