autogen.sh: bump to the upstream version that creates an m4 directory.

diff --git a/autogen.sh b/autogen.sh
index b099848fb0288d0d2f745e7be14551fbdd7307dc..a6000693709e70a7e5246dffc068b8dd49251dee 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# Copyright (c) 2002-20011 The Xfce development team. All rights reserved.
+# Copyright (c) 2002-2017 The Xfce development team. All rights reserved.
 #
 # This library is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by the Free
@@ -24,10 +24,12 @@
 autogen.sh: You don't seem to have the Xfce development tools installed on
             your system, which are required to build this software.
             Please install the xfce4-dev-tools package first, it is available
-            from http://www.xfce.org/.
+            from https://www.xfce.org/.
 EOF
   exit 1
 }
 
-XDT_AUTOGEN_REQUIRED_VERSION="4.7.3" \
+test -d m4 || mkdir m4
+
+XDT_AUTOGEN_REQUIRED_VERSION="4.9.1" \
 exec xdt-autogen $@