LT_AC_PROG_SED patch against 1.4 branch

[Albert Chin]

The new LT_AC_PROG_SED macro uses $ECHO_N and #ECHO_C. However, these
aren't defined in autoconf 2.13, only 2.50 and above. Patch below.

2002-02-25  Albert Chin-A-Young  <address@hidden>

        * Use $ac_n and $ac_c rather than $ECHO_N and $ECHO_C for
        new LT_AC_PROG_SED macro. $ECHO_N and $ECHO_C defined for
        autoconf 2.50 and above only.

-- 
albert chin (address@hidden)

-- snip snip
Index: libtool.m4
===================================================================
RCS file: /cvsroot/libtool/libtool/libtool.m4,v
retrieving revision 1.166.2.34
diff -u -3 -p -r1.166.2.34 libtool.m4
--- libtool.m4  2 Feb 2002 00:17:12 -0000       1.166.2.34
+++ libtool.m4  25 Feb 2002 06:09:14 -0000
@@ -3644,7 +3648,7 @@ $debug ||
     test ! -f ${_sed} && break
     cat /dev/null > "$tmp/sed.in"
     _count=0
-    echo $ECHO_N "0123456789$ECHO_C" >"$tmp/sed.in"
+    echo $ac_n "0123456789$ac_c" >"$tmp/sed.in"
     # Check for GNU sed and select it if it is found.
     if "${_sed}" --version 2>&1 < /dev/null | egrep '(GNU)' > /dev/null; then
       lt_cv_path_SED=${_sed}
@@ -3657,7 +3661,7 @@ $debug ||
       echo >>"$tmp/sed.nl"
       ${_sed} -e 's/a$//' < "$tmp/sed.nl" >"$tmp/sed.out" || break
       cmp -s "$tmp/sed.out" "$tmp/sed.nl" || break
-      # 10000 chars as input seems more than enough
+      # 40000 chars as input seems more than enough
       test $_count -gt 10 && break
       _count=`expr $_count + 1`
       if test $_count -gt $_max; then