gnulib: update

README-hacking

@@ -309,7 +309,7 @@ re-run the tests, run:
 
     ./gnulib-tool --symlink --create-test --dir=/tmp/gnutest bitset-tests
     cd /tmp/gnutest
-    ./configure CC='gcc-mp-8 -fsanitize=undefined'
+    ./configure -C CC='gcc-mp-8 -fsanitize=undefined' CFLAGS='-ggdb'
     make check
 
 * Release Procedure

lib/.gitignore

@@ -321,3 +321,10 @@
 /assure.h
 /fsync.c
 /textstyle.in.h
+/windows-mutex.c
+/windows-mutex.h
+/windows-once.c
+/windows-once.h
+/windows-recmutex.c
+/windows-recmutex.h
+/windows-spinlock.h

m4/.gitignore

@@ -7,9 +7,7 @@
 /calloc.m4
 /canonicalize.m4
 /clock_time.m4
-/close-stream.m4
 /close.m4
-/closeout.m4
 /codeset.m4
 /config-h.m4
 /configmake.m4