Update to autoconf 2.59 standards.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19207 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/projects/sample/autoconf/configure.ac b/projects/sample/autoconf/configure.ac
index c0715ea..67e93aa 100644
--- a/projects/sample/autoconf/configure.ac
+++ b/projects/sample/autoconf/configure.ac
@@ -7,6 +7,7 @@
 AC_CONFIG_AUX_DIR([autoconf])
 
 dnl Configure a header file
+AC_CONFIG_FILES([Makefile.common])
 
 dnl Configure Makefiles
 dnl List every Makefile that ecists within your source tree
@@ -61,4 +62,4 @@
 dnl **************************************************************************
 dnl * Create the output files
 dnl **************************************************************************
-AC_OUTPUT(Makefile.common)
+AC_OUTPUT