maint: re-anchor all .gitignore entries.

* bootstrap: Copy from gnulib's latest for the fix to
automatically anchor entries it constructs.
* gnulib: Update to latest just so it has the same bootstrap.
* .gitignore, build-aux/.gitignore, doc/.gitignore:
* lib/.gitignore, m4/.gitignore, po/.gitignore:
* runtime-po/.gitignore: Re-anchor all entries.

lib/.gitignore

@@ -1,216 +1,216 @@
-*.a
-*.bak
-*.o
-*~
-.deps
-.dirstamp
-Makefile
-Makefile.in
-alloca.h
-alloca.in.h
-arg-nonnull.h
-argmatch.c
-argmatch.h
-asnprintf.c
-basename-lgpl.c
-basename.c
-binary-io.h
-bitrotate.h
-c++defs.h
-c-ctype.c
-c-ctype.h
-c-strcase.h
-c-strcasecmp.c
-c-strncasecmp.c
-charset.alias
-cloexec.c
-cloexec.h
-config.charset
-config.h
-config.hin
-configmake.h
-dirname-lgpl.c
-dirname.c
-dirname.h
-dup-safer-flag.c
-dup-safer.c
-dup2.c
-errno.h
-errno.in.h
-error.c
-error.h
-exitfail.c
-exitfail.h
-fatal-signal.c
-fatal-signal.h
-fcntl.c
-fcntl.h
-fcntl.in.h
-fd-safer-flag.c
-fd-safer.c
-float+.h
-float.h
-float.in.h
-fopen-safer.c
-fopen.c
-fprintf.c
-fpucw.h
-frexp.c
-frexpl.c
-fseterr.c
-fseterr.h
-getdtablesize.c
-getopt.c
-getopt.h
-getopt.in.h
-getopt1.c
-getopt_int.h
-gettext.h
-gnulib.mk
-hash.c
-hash.h
-intprops.h
-inttypes.h
-inttypes.in.h
-isnan.c
-isnand-nolibm.h
-isnand.c
-isnanf-nolibm.h
-isnanf.c
-isnanl-nolibm.h
-isnanl.c
-localcharset.c
-localcharset.h
-malloc.c
-math.h
-math.in.h
-mbrtowc.c
-mbsinit.c
-mbswidth.c
-mbswidth.h
-memchr.c
-memchr.valgrind
-obstack.c
-obstack.h
-open.c
-pipe-safer.c
-pipe.c
-pipe.h
-pipe2-safer.c
-pipe2.c
-printf-args.c
-printf-args.h
-printf-frexp.c
-printf-frexp.h
-printf-frexpl.c
-printf-frexpl.h
-printf-parse.c
-printf-parse.h
-printf.c
-quote.c
-quote.h
-quotearg.c
-quotearg.h
-rawmemchr.c
-rawmemchr.valgrind
-realloc.c
-ref-add.sed
-ref-add.sin
-ref-del.sed
-ref-del.sin
-sched.h
-sched.in.h
-sig-handler.h
-sigaction.c
-signal.h
-signal.in.h
-signbitd.c
-signbitf.c
-signbitl.c
-sigprocmask.c
-size_max.h
-snprintf.c
-spawn.h
-spawn.in.h
-spawn_faction_addclose.c
-spawn_faction_adddup2.c
-spawn_faction_addopen.c
-spawn_faction_destroy.c
-spawn_faction_init.c
-spawn_int.h
-spawnattr_destroy.c
-spawnattr_init.c
-spawnattr_setflags.c
-spawnattr_setsigmask.c
-spawni.c
-spawnp.c
-sprintf.c
-stamp-h1
-stat.c
-stdbool.h
-stdbool.in.h
-stddef.h
-stddef.in.h
-stdint.h
-stdint.in.h
-stdio--.h
-stdio-impl.h
-stdio-safer.h
-stdio-write.c
-stdio.h
-stdio.in.h
-stdlib.h
-stdlib.in.h
-stpcpy.c
-strchrnul.c
-strchrnul.valgrind
-streq.h
-strerror.c
-string.h
-string.in.h
-stripslash.c
-strndup.c
-strnlen.c
-strtol.c
-strtoul.c
-strverscmp.c
-sys
-sys_stat.h
-sys_stat.in.h
-sys_wait.h
-sys_wait.in.h
-time.h
-time.in.h
-unistd--.h
-unistd-safer.h
-unistd.h
-unistd.in.h
-unitypes.h
-unitypes.in.h
-uniwidth
-uniwidth.h
-uniwidth.in.h
-unlocked-io.h
-unsetenv.c
-vasnprintf.c
-vasnprintf.h
-verify.h
-vfprintf.c
-vsnprintf.c
-vsprintf.c
-w32spawn.h
-wait-process.c
-wait-process.h
-waitpid.c
-warn-on-use.h
-wchar.h
-wchar.in.h
-wctype.h
-wctype.in.h
-wcwidth.c
-xalloc-die.c
-xalloc.h
-xmalloc.c
-xsize.h
-xstrndup.c
-xstrndup.h
+/*.a
+/*.bak
+/*.o
+/*~
+/.deps
+/.dirstamp
+/Makefile
+/Makefile.in
+/alloca.h
+/alloca.in.h
+/arg-nonnull.h
+/argmatch.c
+/argmatch.h
+/asnprintf.c
+/basename-lgpl.c
+/basename.c
+/binary-io.h
+/bitrotate.h
+/c++defs.h
+/c-ctype.c
+/c-ctype.h
+/c-strcase.h
+/c-strcasecmp.c
+/c-strncasecmp.c
+/charset.alias
+/cloexec.c
+/cloexec.h
+/config.charset
+/config.h
+/config.hin
+/configmake.h
+/dirname-lgpl.c
+/dirname.c
+/dirname.h
+/dup-safer-flag.c
+/dup-safer.c
+/dup2.c
+/errno.h
+/errno.in.h
+/error.c
+/error.h
+/exitfail.c
+/exitfail.h
+/fatal-signal.c
+/fatal-signal.h
+/fcntl.c
+/fcntl.h
+/fcntl.in.h
+/fd-safer-flag.c
+/fd-safer.c
+/float+.h
+/float.h
+/float.in.h
+/fopen-safer.c
+/fopen.c
+/fprintf.c
+/fpucw.h
+/frexp.c
+/frexpl.c
+/fseterr.c
+/fseterr.h
+/getdtablesize.c
+/getopt.c
+/getopt.h
+/getopt.in.h
+/getopt1.c
+/getopt_int.h
+/gettext.h
+/gnulib.mk
+/hash.c
+/hash.h
+/intprops.h
+/inttypes.h
+/inttypes.in.h
+/isnan.c
+/isnand-nolibm.h
+/isnand.c
+/isnanf-nolibm.h
+/isnanf.c
+/isnanl-nolibm.h
+/isnanl.c
+/localcharset.c
+/localcharset.h
+/malloc.c
+/math.h
+/math.in.h
+/mbrtowc.c
+/mbsinit.c
+/mbswidth.c
+/mbswidth.h
+/memchr.c
+/memchr.valgrind
+/obstack.c
+/obstack.h
+/open.c
+/pipe-safer.c
+/pipe.c
+/pipe.h
+/pipe2-safer.c
+/pipe2.c
+/printf-args.c
+/printf-args.h
+/printf-frexp.c
+/printf-frexp.h
+/printf-frexpl.c
+/printf-frexpl.h
+/printf-parse.c
+/printf-parse.h
+/printf.c
+/quote.c
+/quote.h
+/quotearg.c
+/quotearg.h
+/rawmemchr.c
+/rawmemchr.valgrind
+/realloc.c
+/ref-add.sed
+/ref-add.sin
+/ref-del.sed
+/ref-del.sin
+/sched.h
+/sched.in.h
+/sig-handler.h
+/sigaction.c
+/signal.h
+/signal.in.h
+/signbitd.c
+/signbitf.c
+/signbitl.c
+/sigprocmask.c
+/size_max.h
+/snprintf.c
+/spawn.h
+/spawn.in.h
+/spawn_faction_addclose.c
+/spawn_faction_adddup2.c
+/spawn_faction_addopen.c
+/spawn_faction_destroy.c
+/spawn_faction_init.c
+/spawn_int.h
+/spawnattr_destroy.c
+/spawnattr_init.c
+/spawnattr_setflags.c
+/spawnattr_setsigmask.c
+/spawni.c
+/spawnp.c
+/sprintf.c
+/stamp-h1
+/stat.c
+/stdbool.h
+/stdbool.in.h
+/stddef.h
+/stddef.in.h
+/stdint.h
+/stdint.in.h
+/stdio--.h
+/stdio-impl.h
+/stdio-safer.h
+/stdio-write.c
+/stdio.h
+/stdio.in.h
+/stdlib.h
+/stdlib.in.h
+/stpcpy.c
+/strchrnul.c
+/strchrnul.valgrind
+/streq.h
+/strerror.c
+/string.h
+/string.in.h
+/stripslash.c
+/strndup.c
+/strnlen.c
+/strtol.c
+/strtoul.c
+/strverscmp.c
+/sys
+/sys_stat.h
+/sys_stat.in.h
+/sys_wait.h
+/sys_wait.in.h
+/time.h
+/time.in.h
+/unistd--.h
+/unistd-safer.h
+/unistd.h
+/unistd.in.h
+/unitypes.h
+/unitypes.in.h
+/uniwidth
+/uniwidth.h
+/uniwidth.in.h
+/unlocked-io.h
+/unsetenv.c
+/vasnprintf.c
+/vasnprintf.h
+/verify.h
+/vfprintf.c
+/vsnprintf.c
+/vsprintf.c
+/w32spawn.h
+/wait-process.c
+/wait-process.h
+/waitpid.c
+/warn-on-use.h
+/wchar.h
+/wchar.in.h
+/wctype.h
+/wctype.in.h
+/wcwidth.c
+/xalloc-die.c
+/xalloc.h
+/xmalloc.c
+/xsize.h
+/xstrndup.c
+/xstrndup.h