configure: Regenerate with (preferred) autoconf 2.57.

	* configure: Regenerate with (preferred) autoconf 2.57.
	* doc/install.texi: Note that 'gcc' is now a 2.57 directory.

From-SVN: r74390

gcc/ChangeLog

+2003-12-07  Nathanael Nerode  <neroden@gcc.gnu.org>
+
+	* configure: Regenerate with (preferred) autoconf 2.57.
+	* doc/install.texi: Note that 'gcc' is now a 2.57 directory.
+
 2003-12-07  Eric Botcazou  <ebotcazou@libertysurf.fr>
 
 	PR optimization/12965

gcc/doc/install.texi

@@ -293,7 +293,8 @@ systems' @command{tar} programs will also work, only try GNU
 Necessary when modifying @file{configure.in}, @file{aclocal.m4}, etc.@:
 to regenerate @file{configure} and @file{config.in} files.  Most
 directories require autoconf 2.13 (exactly), but @file{libiberty},
-@file{fastjar}, and @file{libstdc++-v3} require autoconf 2.57 (exactly).
+@file{fastjar}, @file{libstdc++-v3}, and @file{gcc} require
+autoconf 2.57 (exactly).
 
 @item automake versions 1.4-p? and 1.7.?