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

[Andrew Cagney]

New commits:
commit fe02a0132741e45021e197aa4ed69d5c6a5755ad
Author: Andrew Cagney <cagney at gnu.org>
Date:   Fri Mar 22 16:48:19 2019 -0400

    certs: add a root-cert cache
    
    Eliminate the repeated and expensive fetching of the same root certs
    from the NSS DB.
    
    Add and schedule a global timer that flushes the root cert cache after
    5 minutes of inactivity.