usign: update to the latest version, use libubox base64 code

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

SVN-Revision: 45642

package/system/usign/Makefile

 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=usign
-PKG_VERSION:=2015-04-06
+PKG_VERSION:=2015-05-08
 PKG_RELEASE=$(PKG_SOURCE_VERSION)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=git://git.openwrt.org/project/usign.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=395369a223b6c48e0d897d0c4c4d17236edbeea9
+PKG_SOURCE_VERSION:=cf8dcdb8a4e874c77f3e9a8e9b643e8c17b19131
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 CMAKE_INSTALL:=1
 PKG_CHECK_FORMAT_SECURITY:=1
@@ -25,9 +25,13 @@ include $(INCLUDE_DIR)/cmake.mk
 define Package/usign
   SECTION:=base
   CATEGORY:=Base system
+  DEPENDS:=+libubox
   TITLE:=OpenWrt signature verification utility
 endef
 
+CMAKE_OPTIONS += \
+	-DUSE_LIBUBOX=on
+
 define Package/usign/install
 	$(INSTALL_DIR) $(1)/usr/bin