xtables-addons: rework uid/gid compat patch to use KUIDT_INIT() and KGIDT_INIT() macros

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35203 3c298f89-4303-0410-b956-a3cf2f4a3e73
base-files: rename ULA generation script

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35204 3c298f89-4303-0410-b956-a3cf2f4a3e73
ipv6-support: Rename enable-ipv6 UCI defaults

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@35205 3c298f89-4303-0410-b956-a3cf2f4a3e73