liburcu: update to 0.8.7

Signed-off-by: Nicolas Thill <nico@openwrt.org>

libs/liburcu/Makefile

@@ -1,4 +1,5 @@
 #
+# Copyright (C) 2015 OpenWrt.org
 # Copyright (C) 2014 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
 #
 # This is free software, licensed under the GNU General Public License v2.
@@ -8,13 +9,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=liburcu
-PKG_VERSION:=0.8.6
+PKG_VERSION:=0.8.7
 PKG_RELEASE:=1
 
 PKG_SOURCE:=userspace-rcu-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_SUBDIR:=userspace-rcu-$(PKG_VERSION)
 PKG_SOURCE_URL:=https://lttng.org/files/urcu/
-PKG_MD5SUM:=834d91d939dd55108a05763be9879856
+PKG_MD5SUM:=7a6ee17871d31226db3f618e28351d22
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/userspace-rcu-$(PKG_VERSION)
 PKG_BUILD_PARALLEL:=1