libxerces-c: update to v3.1.3

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

libs/libxerces-c/Makefile

@@ -1,5 +1,5 @@
 #
-# Copyright (C) 2015 OpenWrt.org
+# Copyright (C) 2015-2016 OpenWrt.org
 #
 # This is free software, licensed under the GNU General Public License v2.
 # See /LICENSE for more information.
@@ -8,13 +8,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libxerces-c
-PKG_VERSION:=3.1.2
+PKG_VERSION:=3.1.3
 PKG_RELEASE:=1
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=git://git.apache.org/xerces-c.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=Xerces-C_3_1_2
+PKG_SOURCE_VERSION:=Xerces-C_3_1_3
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_MAINTAINER:=Álvaro Fernández Rojas <noltari@gmail.com>