ubus: update to latest version, adds various fixes and improvements

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

Backport of r42594

git-svn-id: svn://svn.openwrt.org/openwrt/branches/barrier_breaker@42595 3c298f89-4303-0410-b956-a3cf2f4a3e73

package/system/ubus/Makefile

 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ubus
-PKG_VERSION:=2014-07-03
+PKG_VERSION:=2014-09-17
 PKG_RELEASE=$(PKG_SOURCE_VERSION)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=git://nbd.name/luci2/ubus.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=f688c7ad0b2435a89bfd13f5496cabf596b54c8f
+PKG_SOURCE_VERSION:=4c4f35cf2230d70b9ddd87638ca911e8a563f2f3
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MIRROR_MD5SUM:=
 CMAKE_INSTALL:=1