Update --block-outside-dns to work on Windows Vista

Update --block-outside-dns to work on Windows Vista

Windows Vista doesn't support non-equal matching of application name, it
is available only since Windows 7.

This commit splits 2 filtering conditions with non-equal matching to 2
filters each with 1 filtering condition: permit IPv4 (first filter)
and IPv6 (second filter) port 53 traffic from openvpn.exe instead
of blocking all non-openvpn.exe traffic on port 53 for both protocols.

Trac #648

Acked-by: Selva Nair <selva.nair@gmail.com>
Message-Id: <1452900938-3636-1-git-send-email-iam@valdikss.org.ru>
URL: http://article.gmane.org/gmane.network.openvpn.devel/10998

Signed-off-by: Gert Doering <gert@greenie.muc.de>