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

[Andrew Cagney]

New commits:
commit ffc87afd94ec8aa54617f988ed2ab993e20bf909
Author: Andrew Cagney <cagney at gnu.org>
Date:   Tue Mar 23 13:59:03 2021 -0400

    ip: remove remaining :: magic in selector and subnet

commit 9b2ea052138a07c23f64e6440862f5d39b50d692
Author: Andrew Cagney <cagney at gnu.org>
Date:   Tue Mar 23 13:08:34 2021 -0400

    testing: test converting the zero address (::) to a selector, range, subnet

commit 9efc885dc09cace2c8bb62f60cd9b442d93e8a33
Author: Andrew Cagney <cagney at gnu.org>
Date:   Tue Mar 23 12:40:35 2021 -0400

    ip: replace subnet_contains_one_address() with subnet_size()
    
    implemented as:
        range_size(range_from_subnet(subnet))
    cool

commit 8366d241bbc43c8680544070a2d6c98a34bd77c7
Author: Andrew Cagney <cagney at gnu.org>
Date:   Tue Mar 23 12:03:30 2021 -0400

    ip: use zero when refering to ::/128 and 0.0.0.0/32
    
    Both ::/128 and 0.0.0.0/32 contain one address - zero (which is
    definitly more than "none").
    
    Update is_all to be consistent.