tools/mtools: disable iconv support, it breaks on some systems

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36516 3c298f89-4303-0410-b956-a3cf2f4a3e73
uci: update to git head

	- copy permission of config files to state files to allow access to state info by non root users
	- properly handle empty string case when unsetting lists

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@36518 3c298f89-4303-0410-b956-a3cf2f4a3e73