Fix GNUTYPE_NAMES directory traversal vulnerability by not extracting

these entries.  Support for GNUTYPE_NAMES will be dropped completely
in 1.16.1.

Notified by sem@

Security:	VuXML 3dd7eb58-80ae-11db-b4ec-000854d03344

archivers/gtar/Makefile

@@ -7,7 +7,7 @@
 
 PORTNAME=	tar
 PORTVERSION=	1.16
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	archivers sysutils
 MASTER_SITES=	${MASTER_SITE_GNU}
 MASTER_SITE_SUBDIR=	${PORTNAME}

archivers/gtar/files/patch-src_extract.c

@@ -0,0 +1,16 @@
+
+$FreeBSD$
+
+--- src/extract.c.orig
++++ src/extract.c
+@@ -1121,10 +1121,6 @@
+       *fun = extract_volhdr;
+       break;
+ 
+-    case GNUTYPE_NAMES:
+-      *fun = extract_mangle_wrapper;
+-      break;
+-
+     case GNUTYPE_MULTIVOL:
+       ERROR ((0, 0,
+ 	      _("%s: Cannot extract -- file is continued from another volume"),