uClibc: backport mount.h update

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40009 3c298f89-4303-0410-b956-a3cf2f4a3e73
[package] util-linux: update to 2.24.1

Signed-off-by: Luka Perkov <luka@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@40010 3c298f89-4303-0410-b956-a3cf2f4a3e73