libmad: patch multiple CVEs and add CPE

Fixes
CVE-2017-8374
CVE-2017-8373
CVE-2017-8372

Signed-off-by: Jan Pavlinec <jan.pavlinec@nic.cz>

libs/libmad/Makefile

@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libmad
 PKG_VERSION:=0.15.1b
-PKG_RELEASE:=4
+PKG_RELEASE:=5
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@SF/mad \
@@ -19,6 +19,7 @@ PKG_MAINTAINER:=Ted Hess <thess@kitschensync.net>
 
 PKG_LICENSE:=GPLv2
 PKG_LICENSE_FILES:=COPYING
+PKG_CPE_ID:=cpe:/a:underbit:mad_libmad
 
 PKG_FIXUP:=autoreconf