Fix link errors with --enable-threads=posix on AIX.

* modules/mbrtowc (Link): New section.
* modules/acl (Link): Likewise.
* modules/argmatch (Link): Likewise.
* modules/backup-rename (Link): Likewise.
* modules/backupfile (Link): Likewise.
* modules/closein (Link): Likewise.
* modules/closeout (Link): Likewise.
* modules/copy-file (Link): Likewise.
* modules/csharpcomp (Link): Likewise.
* modules/csharpexec (Link): Likewise.
* modules/dfa (Link): Likewise.
* modules/exclude (Link): Likewise.
* modules/fnmatch (Link): Likewise.
* modules/fnmatch-gnu (Link): Likewise.
* modules/fnmatch-posix (Link): Likewise.
* modules/glob (Link): Likewise.
* modules/human (Link): Likewise.
* modules/javacomp (Link): Likewise.
* modules/javaexec (Link): Likewise.
* modules/javaversion (Link): Likewise.
* modules/mbfile (Link): Likewise.
* modules/mbiter (Link): Likewise.
* modules/mbmemcasecmp (Link): Likewise.
* modules/mbmemcasecoll (Link): Likewise.
* modules/mbrlen (Link): Likewise.
* modules/mbscasecmp (Link): Likewise.
* modules/mbscasestr (Link): Likewise.
* modules/mbschr (Link): Likewise.
* modules/mbscspn (Link): Likewise.
* modules/mbsinit (Link): Likewise.
* modules/mbslen (Link): Likewise.
* modules/mbsncasecmp (Link): Likewise.
* modules/mbsnlen (Link): Likewise.
* modules/mbsnrtowcs (Link): Likewise.
* modules/mbspbrk (Link): Likewise.
* modules/mbspcasecmp (Link): Likewise.
* modules/mbsrchr (Link): Likewise.
* modules/mbsrtowcs (Link): Likewise.
* modules/mbssep (Link): Likewise.
* modules/mbsspn (Link): Likewise.
* modules/mbsstr (Link): Likewise.
* modules/mbstok_r (Link): Likewise.
* modules/mbswidth (Link): Likewise.
* modules/mbuiter (Link): Likewise.
* modules/mkdir-p (Link): Likewise.
* modules/propername (Link): Likewise.
* modules/quote (Link): Likewise.
* modules/quotearg (Link): Likewise.
* modules/quotearg-simple (Link): Likewise.
* modules/regex-quote (Link): Likewise.
* modules/rpmatch (Link): Likewise.
* modules/sh-quote (Link): Likewise.
* modules/system-quote (Link): Likewise.
* modules/trim (Link): Likewise.
* modules/unistdio/ulc-asnprintf (Link): Likewise.
* modules/unistdio/ulc-fprintf (Link): Likewise.
* modules/unistdio/ulc-vasnprintf (Link): Likewise.
* modules/unistdio/ulc-vasprintf (Link): Likewise.
* modules/unistdio/ulc-vfprintf (Link): Likewise.
* modules/unistdio/ulc-vsnprintf (Link): Likewise.
* modules/unistdio/ulc-vsprintf (Link): Likewise.
* modules/xfreopen (Link): Likewise.
* modules/xmemcoll (Link): Likewise.
* modules/yesno (Link): Likewise.
* modules/acl-tests (Makefile.am): Link the programs with $(LIBTHREAD).
* modules/argmatch-tests (Makefile.am): Likewise.
* modules/closein-tests (Makefile.am): Likewise.
* modules/copy-file-tests (Makefile.am): Likewise.
* modules/dfa-tests (Makefile.am): Likewise.
* modules/fnmatch-tests (Makefile.am): Likewise.
* modules/glob-tests (Makefile.am): Likewise.
* modules/mbmemcasecmp-tests (Makefile.am): Likewise.
* modules/mbmemcasecoll-tests (Makefile.am): Likewise.
* modules/mbrtowc-tests (Makefile.am): Likewise.
* modules/mbscasecmp-tests (Makefile.am): Likewise.
* modules/mbscasestr-tests (Makefile.am): Likewise.
* modules/mbschr-tests (Makefile.am): Likewise.
* modules/mbscspn-tests (Makefile.am): Likewise.
* modules/mbsinit-tests (Makefile.am): Likewise.
* modules/mbsncasecmp-tests (Makefile.am): Likewise.
* modules/mbsnrtowcs-tests (Makefile.am): Likewise.
* modules/mbspbrk-tests (Makefile.am): Likewise.
* modules/mbspcasecmp-tests (Makefile.am): Likewise.
* modules/mbsrchr-tests (Makefile.am): Likewise.
* modules/mbsrtowcs-tests (Makefile.am): Likewise.
* modules/mbsspn-tests (Makefile.am): Likewise.
* modules/mbsstr-tests (Makefile.am): Likewise.
* modules/quotearg-tests (Makefile.am): Likewise.
* modules/quotearg-simple-tests (Makefile.am): Likewise.
* modules/readtokens-tests (Makefile.am): Likewise.
* modules/regex-quote-tests (Makefile.am): Likewise.
* modules/sh-quote-tests (Makefile.am): Likewise.
* modules/system-quote-tests (Makefile.am): Likewise.
* modules/unistdio/ulc-asnprintf-tests (Makefile.am): Likewise.
* modules/unistdio/ulc-vasnprintf-tests (Makefile.am): Likewise.
* modules/unistdio/ulc-vasprintf-tests (Makefile.am): Likewise.
* modules/unistdio/ulc-vsnprintf-tests (Makefile.am): Likewise.
* modules/unistdio/ulc-vsprintf-tests (Makefile.am): Likewise.
* modules/yesno-tests (Makefile.am): Likewise.

modules/javaexec

@@ -28,6 +28,9 @@ lib_SOURCES += javaexec.h javaexec.c
 Include:
 "javaexec.h"
 
+Link:
+$(LIBTHREAD)
+
 License:
 GPL