uci: update to git head

  - fixes memory leak in libuci when trying to open not existing configurations
  - fixes memory leak in libuci-lua when querying not existing sections or options
  - fixes handling of filenames with leading underscore

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36377 3c298f89-4303-0410-b956-a3cf2f4a3e73
kernel: allow __netdev_alloc_skb_ip_align to be called with dev = NULL

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36378 3c298f89-4303-0410-b956-a3cf2f4a3e73