[#5267] Use autoconf 2.65 as a requirement (instead of 2.67)

sflphone-common/configure.ac

@@ -2,7 +2,7 @@ dnl SFLPhone - configure.ac for automake 1.9 and autoconf 2.59
 dnl
 
 dnl Process this file with autoconf to produce a configure script.
-AC_PREREQ([2.67])
+AC_PREREQ([2.65])
 AC_INIT([sflphone],[0.9.12],[sflphoneteam@savoirfairelinux.com],[sflphone])
 AC_COPYRIGHT([[Copyright (c) Savoir-Faire Linux 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011]])
 AC_REVISION([$Revision$])