autoconf: update to latest for fix of M4 detection.

Reported by Eric Blake.
* submodules/autoconf: Update.
(cherry picked from commit c843aaab352ab1f40c7d218fb5bb2c6fd6fd3a88)

diff --git a/ChangeLog b/ChangeLog
index ee33573c91da6d7a26018927ac6c04ff69908d66..e13bde9616be1fe619ba748aeae8cb9f23ec3633 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-12-15  Joel E. Denny  <jdenny@clemson.edu>
+
+       autoconf: update to latest for fix of M4 detection.
+       Reported by Eric Blake.
+       * submodules/autoconf: Update.
+
 2009-12-15  Joel E. Denny  <jdenny@clemson.edu>
 
        portability: use -DGNULIB_POSIXCHECK.

diff --git a/submodules/autoconf b/submodules/autoconf
index 936160f7619cb7fddbc424bb5cb9a2f997d8e166..81074eaa201a289d11b6be05e0c78afbe5ff79f5 160000 (submodule)
--- a/submodules/autoconf
+++ b/submodules/autoconf
@@ -1 +1 @@
-Subproject commit 936160f7619cb7fddbc424bb5cb9a2f997d8e166
+Subproject commit 81074eaa201a289d11b6be05e0c78afbe5ff79f5