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

[Andrew Cagney]

New commits:
commit fb7cefa495538e709aaf589f07414e50c209234e
Author: Andrew Cagney <cagney at gnu.org>
Date:   Mon Mar 30 10:44:22 2020 -0400

    impair: merge old impair code into new; cleanup
    
    For moment old impairs still use upper-case and IMPAIR();
    subject to change.
    
    - drop any pretence that per-connection impairing works (delete struct
      connection's .extra_impairing field)
    
    - store all impairs in a single struct (if anyone tries to revive
      per-connection impair this might help)
    
    - include <unsigned> in impair help (and only accept when valid)
    
    - only recognize {yes,no,} when the option is boolean since that is
      what bool_str() prints; aliases such as 0, 1, true, false, on, off,
      .. all dropped.
    
    - reject sillyness like --no-impair no-option:no