net-firewall/shorewall*: Bumped to v4.5.21.7

Problems corrected since 4.5.21.6:

1)  The help text for the 'dump' command has been updated to include
    all valid options.

2)  The behavior of ADMINISABSENTMINDED=No is corrected. Previously,
    'shorewall stop' would not block existing connections regardless of
    the setting of this option. Beginning with this release, the
    behavior of ADMINISABSENTMINDED=No depends on whether the routestopped
    or the stoppedrules file defines the allow connections while the
    firewall is stopped.

    If there are entries in /etc/shorewall[6]/routestopped or if there
    are no entries in /etc/shorewall[6]/stoppedrules, then the behavior
    of ADMINISABSENTMINDED=No is as documented (existing connections
    are blocked unles they are allowed by
    /etc/shorewall[6]/routestopped).  If there are no entries in
    /etc/shorewall[6]/stoppedrules, then the behavior is as if
    ADMINISABSENTMINDED=Yes and a warning message is generated.

Full changelogs: http://www.shorewall.net/pub/shorewall/4.5/shorewall-4.5.21/releasenotes.txt