Update from Gnulib

This incorporates:
2018-07-01 getloadavg: don't redefine WINDOWS32
2018-07-01 manywarnings: omit -Wswitch-default
* build-aux/config.sub, lib/getloadavg.c, m4/manywarnings.m4:
Copy from Gnulib.

3 files changed, 9 insertions, 4 deletions

diff --git a/build-aux/config.sub b/build-aux/config.sub
index d1f5b549034..072700fb037 100755
--- a/build-aux/config.sub
+++ b/build-aux/config.sub
@@ -2,7 +2,7 @@
 # Configuration validation subroutine script.
 #   Copyright 1992-2018 Free Software Foundation, Inc.
 
-timestamp='2018-05-24'
+timestamp='2018-07-02'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -1125,6 +1125,12 @@ case $basic_machine in
         ps2)
                 basic_machine=i386-ibm
                 ;;
+        riscv)
+                basic_machine=riscv32-unknown
+                ;;
+        riscv-*)
+                basic_machine=`echo "$basic_machine" | sed 's/^riscv/riscv32/'`
+                ;;
         rm[46]00)
                 basic_machine=mips-siemens
                 ;;
diff --git a/lib/getloadavg.c b/lib/getloadavg.c
index 435d10a6b10..578316e34d8 100644
--- a/lib/getloadavg.c
+++ b/lib/getloadavg.c
@@ -97,7 +97,7 @@
 
 # include "intprops.h"
 
-# if defined _WIN32 && ! defined __CYGWIN__
+# if defined _WIN32 && ! defined __CYGWIN__ && ! defined WINDOWS32
 #  define WINDOWS32
 # endif
 
diff --git a/m4/manywarnings.m4 b/m4/manywarnings.m4
index 925c40e139a..516c5874765 100644
--- a/m4/manywarnings.m4
+++ b/m4/manywarnings.m4
@@ -1,4 +1,4 @@
-# manywarnings.m4 serial 15
+# manywarnings.m4 serial 16
 dnl Copyright (C) 2008-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -239,7 +239,6 @@ m4_defun([gl_MANYWARN_ALL_GCC(C)],
     -Wsuggest-final-types \
     -Wswitch \
     -Wswitch-bool \
-    -Wswitch-default \
     -Wswitch-unreachable \
     -Wsync-nand \
     -Wsystem-headers \