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

gnu/usr.bin/Makefile

@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.137 2012/11/06 12:25:56 skrll Exp $
+#	$NetBSD: Makefile,v 1.139 2014/08/08 19:38:47 apb Exp $
 
 .include <bsd.own.mk>
 
@@ -7,7 +7,7 @@ SUBDIR+=	texinfo
 .else
 SUBDIR+=	bc
 SUBDIR+=	c89 c99
-SUBDIR+=	dc diffutils gkermit
+SUBDIR+=	dc diffutils
 SUBDIR+=	rcs send-pr texinfo
 
 .if ${MKBSDGREP} == "no"
@@ -19,14 +19,6 @@ SUBDIR+=	groff
 .endif
 
 SUBDIR+=	gettext
-
-.if ${MKGCC} != "no"
-.if ${HAVE_GCC} == 4
-.if ${MKGCCCMDS} != "no"
-SUBDIR+=	gcc4
-.endif
-.endif
-.endif
 .endif # defined(__MINIX)
 
 .include <bsd.subdir.mk>

gnu/usr.bin/texinfo/common/config.h

@@ -12,7 +12,9 @@
 /* Define to 1 if translation of program messages to the user's native
    language is requested. */
 #ifndef HOSTTOOL
-/* #undef ENABLE_NLS */
+#if !defined(__minix)
+#define ENABLE_NLS 1
+#endif /* !defined(__minix) */
 #endif
 
 /* Define to 1 if `TIOCGWINSZ' requires <sys/ioctl.h>. */

gnu/usr.bin/texinfo/makeinfo/Makefile

@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.7 2011/05/26 12:56:29 joerg Exp $
+#	$NetBSD: Makefile,v 1.8 2014/03/24 23:03:01 tron Exp $
 
 PROG=		makeinfo
 SRCS=		cmds.c defun.c files.c float.c footnote.c \
@@ -12,4 +12,6 @@ WARNS?=		0	# pointer sign issues
 
 .include <bsd.prog.mk>
 
+CPPFLAGS:=	${CPPFLAGS:S/-D_FORTIFY_SOURCE=2//}
+
 .PATH: ${IDIST}/makeinfo ${IDIST}/doc