unbound: update to 1.6.8 for CVE-2017-15105

A vulnerability was discovered in the processing of wildcard synthesized
NSEC records. While synthesis of NSEC records is allowed by RFC4592,
these synthesized owner names should not be used in the NSEC processing.
This does, however, happen in Unbound 1.6.7 and earlier versions.
(see https://unbound.net/downloads/CVE-2017-15105.txt)

Signed-off-by: Eric Luehrsen <ericluehrsen@hotmail.com>

net/unbound/Makefile

@@ -8,8 +8,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=unbound
-PKG_VERSION:=1.6.7
-PKG_RELEASE:=3
+PKG_VERSION:=1.6.8
+PKG_RELEASE:=1
 
 PKG_LICENSE:=BSD-3-Clause
 PKG_LICENSE_FILES:=LICENSE
@@ -17,7 +17,7 @@ PKG_MAINTAINER:=Eric Luehrsen <ericluehrsen@hotmail.com>
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=http://www.unbound.net/downloads
-PKG_HASH:=4e7bd43d827004c6d51bef73adf941798e4588bdb40de5e79d89034d69751c9f
+PKG_HASH:=e3b428e33f56a45417107448418865fe08d58e0e7fea199b855515f60884dd49
 
 PKG_BUILD_PARALLEL:=1
 PKG_FIXUP:=autoreconf

net/unbound/patches/001-conf.patch

@@ -6,7 +6,7 @@ index 5396029..cbb51ec 100644
 -#
 -# Example configuration file.
 -#
--# See unbound.conf(5) man page, version 1.6.7.
+-# See unbound.conf(5) man page, version 1.6.8.
 -#
 -# this is a comment.
 +##############################################################################