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.

1 files changed, 1 insertions, 2 deletions

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 \