gnuTLS cipers changed to SECURE256

src/freedombone

     if [[ $SYSTEM_TYPE == "$VARIANT_MESH" ]]; then
         sed -i "s/;DNS =.*/DNS = no/g" /etc/ngircd/ngircd.conf
     fi
+    # upgrade a cypher
+    sed -i 's|SECURE128|SECURE256|g' /etc/ngircd/ngircd.conf
     mkdir /var/run/ircd
     chown -R irc:irc /var/run/ircd
     mkdir /var/run/ngircd