[package] util-linux: move and update

[package] util-linux: move and update

This patch makes several changes with util-linux-ng package:

 * moves it to util-linux (upstream name)
 * bumps it to last stable version 2.20.1 (was 2.13.0.1)
 * adds new package getopt
 * sorts packages inside Makefile
 * removes patch, it has been applied upstream

I would also like to maintain this package.

Signed-off-by: Luka Perkov <openwrt@lukaperkov.net>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@31178 3c298f89-4303-0410-b956-a3cf2f4a3e73