NetBSD re-synchronization of the source tree

This brings our tree to NetBSD 7.0, as found on -current on the
10-10-2015.

This updates:
 - LLVM to 3.6.1
 - GCC to GCC 5.1
 - Replace minix/commands/zdump with usr.bin/zdump
 - external/bsd/libelf has moved to /external/bsd/elftoolchain/
 - Import ctwm
 - Drop sprintf from libminc

Change-Id: I149836ac18e9326be9353958bab9b266efb056f0

tests/rump/modautoload/Makefile

@@ -1,15 +1,10 @@
-#	$NetBSD: Makefile,v 1.1 2010/06/09 12:35:45 pooka Exp $
+#	$NetBSD: Makefile,v 1.2 2014/03/10 22:38:53 pooka Exp $
 #
 
 TESTSDIR=	${TESTSBASE}/rump/modautoload
 
 TESTS_C=	t_modautoload
 
-.include <bsd.own.mk>
-.ifdef RUMPKMOD
-CPPFLAGS+=	-DHAVE_HOST_MODULES
-.endif
-
 # Note: we link the rump kernel into the application to make this work
 # on amd64.  This is the reason we keep this test in its own
 # subdirectory -- otherwise the LDADD lines would get a little hairy.

tests/rump/modautoload/t_modautoload.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: t_modautoload.c,v 1.1 2010/06/09 12:35:45 pooka Exp $	*/
+/*	$NetBSD: t_modautoload.c,v 1.2 2014/03/10 22:38:53 pooka Exp $	*/
 
 #include <sys/types.h>
 #include <sys/mount.h>
@@ -34,9 +34,8 @@ static void
 mountkernfs(void)
 {
 
-#ifndef HAVE_HOST_MODULES
-	atf_tc_skip("host kernel modules not supported on this architecture");
-#endif
+	if (!rump_nativeabi_p())
+		atf_tc_skip("host kernel modules not supported");
 
 	rump_init();