Update from Gnulib

This incorporates:
2019-04-07 Add copyright notices in several files
* build-aux/config.sub, doc/misc/texinfo.tex, lib/_Noreturn.h:
Copy from Gnulib.
* lib/gnulib.mk.in: Regenerate.

2 files changed, 17 insertions, 0 deletions

diff --git a/lib/_Noreturn.h b/lib/_Noreturn.h
index 7594e4b0c0b..db9b45554c5 100644
--- a/lib/_Noreturn.h
+++ b/lib/_Noreturn.h
@@ -1,3 +1,19 @@
+/* A C macro for declaring that a function does not return.
+   Copyright (C) 2011-2019 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published
+   by the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
 #ifndef _Noreturn
 # if (defined __cplusplus \
       && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
diff --git a/lib/gnulib.mk.in b/lib/gnulib.mk.in
index 0d9a885be3d..1450df9f638 100644
--- a/lib/gnulib.mk.in
+++ b/lib/gnulib.mk.in
@@ -179,6 +179,7 @@ CAIRO_LIBS = @CAIRO_LIBS@
 CC = @CC@
 CFLAGS = @CFLAGS@
 CFLAGS_SOUND = @CFLAGS_SOUND@
+CHECK_STRUCTS = @CHECK_STRUCTS@
 CLIENTRES = @CLIENTRES@
 CLIENTW = @CLIENTW@
 CM_OBJ = @CM_OBJ@