restructure startup of dnymaic_dns_updater.sh
 - first run load_all_config_options (it returns 1 if SECTION_ID not found) #779
 - set all defaults if necessary
 - verify if username and/or password is needed inside update_url #779
 - remove wait - will be done by retry_interval and retry_count if communication fails
provider specific update scripts
 - verify if username/password are needed
services_ipv6
 - added freedns.afraid.org
 - IPv6 should work due to their documentation
minor fixes

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

* remove CHANGELOG from distribution
* fix syslog output printing "\n" or other formating chars
* ddns configuration
    - new UCI-config value ddns.global.allow_local_ip "0" or "1"
(default "0") - (OpenWrt Ticket 18642)
* dynamic_dns_functions.sh
- new function split_FQDN() splits a given FQDN into host,
(registerable) domainname, and TLD using
https://publicsuffix.org/list/effective_tld_names.dat
- verify_host_port() use BIND host, if installed
- verify_host_port() not detecting ip, if already given
- fixed regexp for IP detection from nslookup's answer - (OpenWrt
Ticket 16363)
- support ddns.global.allow_local_ip to allow sending non public IP's
to DDNS provider like 127.x, 192.168.x.x or fxxx - (OpenWrt Ticket
18642)
* new file tld_names.dat
- used by dynamic_dns_functions.sh inside split_FQDN() function to
find valid TLD's
* update_cloudflare.sh
- modified subdomain/domain splitting using split_FQDN()
- modified support for AA12.09 (json_get_keys())
- minor fixes and cleanup
- many thanks to Aaron Tanner for testing

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

- removed special handling for dynamic_dns_helper.sh and url_escape.sed in Makefile/postinst
- minor fixes in logging
- allow retry_count of "0" to run infinite retrys on error
	-- https://dev.openwrt.org/ticket/18382
- changed naming of .dat and .err file to have one per section, not one per process
- defer hotplug helper from 25-ddns to 95-ddns (according initscript START=95)
	-- https://github.com/openwrt/packages/issues/568 (#568)
- fix commandline for busybox wget
	-- https://dev.openwrt.org/ticket/18411
	-- https://dev.openwrt.org/ticket/18437
	-- https://github.com/openwrt/packages/issues/605 (#605)
- remove checking answer from ddns provider because there are to many different.
	Some providers do not follow API from dyndns.com

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

- moved /usr/lib/ddns/dynamic_dns_lucihelper.sh from luci-app-ddns into this package
	(Github openwrt/luci issue 251)
	(OpenWrt Trac tickets 18326 18347)
- fix: dynamic_dns_update.sh did not loop
	(OpenWrt Trac ticket 18336)
- add provider cloudflare.com IPv4 and IPv6 (Thanks to Paul for support and testing)
	(OpenWrt Trac ticket 12500)
- modified detection, if dynamic_dns_fuctions are used by dynamic_dns_lucihelper.sh
- redirect stdout of wget,curl,host,nslookup,nc etc to /tmp/ddns_$$.dat and *.err instead of variables
- extended error detection in get_local_ip function
- modified verify of option ip_script to allow parameters, when calling
- add provider selfhost.de IPv4
- add provider no-ip.pl (nothing to do with no-ip.com)
	(Github openwrt/packages issue #542)
	IPv4 (tested) and also added for
	IPv6 (NOT tested) because client IP is autodetected be provider
- add getlocalip_sample.sh as sample script for usage of
	option ip_source 'script'  together with
	option ip_script '/usr/lib/ddns/getlocalip.sh -4'
- cleanup whitespaces at line ends

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

- fixed postinst and prerm in Makefile
- implementation of provider specific update scripts into services and
services_ipv6 file.
	first Provider "no-ip.com"	- Thanks to DarkStarXxX for
request and testing
- finished uci/ddns wiki at http://wiki.openwrt.org/doc/uci/ddns
- rewritten retry management
- rewritten logging including following Issue 469
	https://github.com/openwrt/packages/issues/469
- stop running sections on hotplug ifdown event (like start on ifup)
- implement trap detection
	also kill "sleep" child processes
	SIGHUP to reload configuration (not really reloading, simply
starting a new process)
	/etc/init.d/ddns reload implemented
- code optimization
- new provider LoopiaDNS.se	Issue 494
	https://github.com/openwrt/packages/issues/494

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

Changed the verify of DNS server and proxy at script start to retry the
verify if there are connection problems during verify
plus some minor changes.

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

MyDNS.JP, a dynamic DNS service, is added to ddns-scripts.
http://www.mydns.jp/

Signed-off-by: sstream <sstream00@yahoo.co.jp>

fixes problem CRITICAL ERROR - custom update_script not found
when extracting url and script from services / services_ipv6 file

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

Squashed commit of the following:

commit 2701c8868e
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Oct 5 11:01:57 2014 +0200

    ddns-scripts: Added support for custom update scripts

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

commit e07ecb90fa
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Oct 5 11:00:11 2014 +0200

    ddns-scripts: Added support for custom update scripts

    Added support for custom update scripts with new option update_script.
    function get_service_url() renamed to get_service_data() and extended to detect scripts inside service / service_ipv6 for later use
    function send_update() modified to support custom update scripts.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 39e41b2151
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Oct 5 10:52:44 2014 +0200

    ddns-scripts: Added support for custom update scripts

    Added support for custom update scripts with new option update_script
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 33f264768e
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Oct 5 10:48:21 2014 +0200

    ddns-scripts: Insert description for NEW option update_script

    Insert description for NEW option update_script
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 6f6a60244d
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Oct 5 10:43:52 2014 +0200

    ddns-scripts: Update PKG_RELEASE

    Update_PKG_RELEASE to reflect changes
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

New function __urlencode() to remove special chars used in send_update() for username and password.
username might have email address and password might have special chars for security reasons.
Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

correction of excluding private IPv4 in send_update() function.
Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

Thanks to "eqsun" for report and offer of fix.
Otherwise the ip address starts with 100~109 will be treated as invalid.
Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

Requested by: Martin Röcker <roecker@empty-v.de>
Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

new extraction of IP inside function get_registered_ip for host and nslookup
thanks to jow for the sed

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

Squashed commit of the following:

commit fc1d42f069
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 18:01:43 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

commit 731f9b4df0
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:59:25 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    personal helper script to create hashes for CA-Certificates for Wget and cURL using https protocol without errors.

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit df8f6c9d5d
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:56:05 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    rewritten

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 50cdf5acb9
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:54:40 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    rewritten

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit b1d650a345
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:52:52 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    not needed in this version

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 9532114b03
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:51:39 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    same function as existing services file but used for IPv6

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit a636bc25c6
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:46:56 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    New file explaining availible parameters.

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.
    Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>

commit 52332354fc
Author: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Date:   Sun Sep 21 17:44:45 2014 +0200

    [ddns-scripts] Update to Version 2.0.1-1

    Sorry GitHub web interface only supports single commits that will be summarized into one pull request.

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

Signed-off-by: Liviu Pislaru <liviu@duiadns.net>

Signed-off-by: Jonathan McCrohan <jmccrohan@gmail.com>

Service provided by Securepoint GmbH, 21335 Lüneburg, Germany
Info at http://www.spdns.de

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

To be consistent with other services only start via hotplug if enabled.
Now full functionality of /etc/init.d/ddns enable/disable start/stop

Optimization: Include script only if needed

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

Hotplug script will start service for each interface.
To prevent duplicates and in general must not start on boot.

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

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>