ddns-scripts: Ver.2.6.0 - support hostip and uclient-fetch

- add support for "hostip" to get_registered_ip() as alternative to "Bind host" package https://dev.openwrt.org/ticket/20893#comment:5
- allow to send updates using compiled-in certificate file/path of curl/wget #2242 #2243 #2245
- add support for uclient-fetch / libustream-ssl.so
- remove /128 prefix-filter in get_local_ip() via interface #2268
- add dyndns.org to services_ipv6 https://forum.openwrt.org/viewtopic.php?id=62103
- readd duckdns.org to services #2251 (lost somewhere in data heaven)
- add zzzz.io service #2302
- updated tld_names.dat

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

net/ddns-scripts/files/dynamic_dns_lucihelper.sh

@@ -2,13 +2,8 @@
 # /usr/lib/ddns/luci_dns_helper.sh
 #
 #.Distributed under the terms of the GNU General Public License (GPL) version 2.0
-#
-# Written in August 2014 by
-#.Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
+#.2014-2016 Christian Schoenebeck <christian dot schoenebeck at gmail dot com>
 # This script is used by luci-app-ddns
-# - getting registered IP
-# - check if possible to get local IP
-# - verifing given DNS- or Proxy-Server
 #
 # variables in small chars are read from /etc/config/ddns as parameter given here
 # variables in big chars are defined inside these scripts as gloval vars