ubus: revert the package install section from the trunk sync commit

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@35267 3c298f89-4303-0410-b956-a3cf2f4a3e73
netifd: sync with trunk r35297, adds another alias support fix

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@35298 3c298f89-4303-0410-b956-a3cf2f4a3e73
netfilter: add support for flushing conntrack via /proc

Backport of r35330

git-svn-id: svn://svn.openwrt.org/openwrt/branches/attitude_adjustment@35331 3c298f89-4303-0410-b956-a3cf2f4a3e73