AA: backport libubox from trunk

git-svn-id: svn://svn.openwrt.org/openwrt@36704 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: backport netifd from trunk

git-svn-id: svn://svn.openwrt.org/openwrt@36705 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: backport 6in4 from trunk

git-svn-id: svn://svn.openwrt.org/openwrt@36706 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: backport 6rd from trunk

git-svn-id: svn://svn.openwrt.org/openwrt@36707 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: backport 6to4 from trunk

git-svn-id: svn://svn.openwrt.org/openwrt@36708 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: backport ds-lite from trunk

git-svn-id: svn://svn.openwrt.org/openwrt@36709 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: backport odhcp6c from trunk

git-svn-id: svn://svn.openwrt.org/openwrt@36710 3c298f89-4303-0410-b956-a3cf2f4a3e73
AA: backport 6relayd from trunk

git-svn-id: svn://svn.openwrt.org/openwrt@36711 3c298f89-4303-0410-b956-a3cf2f4a3e73