2009-07-30  Paolo Bonzini  <bonzini@gnu.org>

	Add back AH_CHECK_HEADERS.
	* lib/autoconf/general.m4 (AH_CHECK_HEADERS): New.
	* NEWS: Create new section.

diff --git a/NEWS b/NEWS
index fc5730f..7e8a522 100644
--- a/NEWS
+++ b/NEWS
@@ -1,5 +1,14 @@
 GNU Autoconf NEWS - User visible changes.
 
+* Major changes in Autoconf 2.64a (????-??-??) [experimental]
+  Released by ???? ????
+
+** The following undocumented autoconf macros, removed in Autoconf 2.64,
+   have been reinstated:
+   AH_CHECK_HEADERS
+
+   These macros are present only for backwards compatibility purposes.
+
 * Major changes in Autoconf 2.64 (2009-07-26) [stable]
   Released by Eric Blake, based on git versions 2.63b.*.
 
diff --git a/lib/autoconf/headers.m4 b/lib/autoconf/headers.m4
index 21b512c..36c1899 100644
--- a/lib/autoconf/headers.m4
+++ b/lib/autoconf/headers.m4
@@ -253,6 +253,12 @@ m4_define([_AH_CHECK_HEADER],
   [Define to 1 if you have the <$1> header file.])])
 
 
+# AH_CHECK_HEADERS(HEADER-FILE...)
+# --------------------------------
+m4_define([AH_CHECK_HEADERS],
+[m4_foreach_w([AC_Header], [$1], [_AH_CHECK_HEADER(m4_defn([AC_Header]))])])
+
+
 # AC_CHECK_HEADERS(HEADER-FILE...,
 #		   [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND],
 #		   [INCLUDES])