patch for Autoconf testsuite 40 failure with Automake 1.4

[Paul Eggert]

Thanks for your bug report.  I looked through our old email and found
the following similar bug report, with a proposed patch.  Does this
patch work for you?  Please let us know.  Thanks.

http://lists.gnu.org/archive/html/bug-autoconf/2003-08/msg00051.html

Odd.  Akim wrote "This is known and fixed now" later
<http://lists.gnu.org/archive/html/bug-autoconf/2003-08/msg00134.html>
but I don't see a fix installed.  I suspect he was confused by a
similar fix that did get installed.  So I just installed the following:

2004-08-09  Paul Eggert  <address@hidden>

        * tests/torture.at (Deep Package): Use configure.in, not configure.ac,
        for compatibility with Automake 1.4.  Reported by J C Fitzgerald in
        <http://lists.gnu.org/archive/html/bug-autoconf/2003-08/msg00051.html>.

--- torture.at.~1.46.~  2004-01-04 23:05:23 -0800
+++ torture.at  2004-08-09 16:10:55 -0700
@@ -669,14 +669,14 @@ AC_OUTPUT
 # The contents of `inner/', and `inner/innermost/'.
 AS_MKDIR_P([inner/innermost])
 
-AT_DATA([inner/configure.ac],
+AT_DATA([inner/configure.in],
 [[AC_INIT(GNU Inner, 1.0)
 AC_ARG_VAR([INNER], [an inner variable])
 AC_CONFIG_SUBDIRS(innermost)
 AC_OUTPUT
 ]])
 
-AT_DATA([inner/innermost/configure.ac],
+AT_DATA([inner/innermost/configure.in],
 [[AC_INIT(GNU Innermost, 1.0)
 AC_ARG_VAR([INNERMOST], [an innermost variable])
 AC_CONFIG_HEADERS(config.h:config.hin)