libpng: update to 1.2.52

Signed-off-by: Ian Leonard <antonlacon@gmail.com>
smstools3 : ADD smstools3 package

Add smstools3 package from http://smstools3.kekekasvi.com/

Tested successfull as an email/sms gateway with :
- Device: ID 12d1:1001 Huawei Technologies Co., Ltd. E169/E620/E800 HSDPA Modem
- Trunk: OpenWrt Chaos Calmer r43753
- Kirkwood : Globalscale Technologies Guruplug Server Plus

Send and receive SMS with modem : OK
Forward received SMS to mailhub : OK

Signed-off-by: Gerald Kerma <dreagle@doukki.net>
[luci-app-privoxy] New LuCI App to support privoxy

New LuCI Application to support privoxy WEB proxy

Signed-off-by: Christian Schoenebeck <christian.schoenebeck@gmail.com>
Merge pull request #1 from erdoukki/smstools3

smstools3 : ADD smstools3 package
Merge pull request #694 from erdoukki/master

smstools3 : ADD smstools3 package
Merge pull request #693 from chris5560/master

[luci-app-privoxy] New LuCI App to support privoxy
Merge pull request #697 from antonlacon/libpng-1.2.x

libpng: update to 1.2.52