only require 2.59

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@399 a93c3328-9c30-0410-af19-c9cd2b2d52af

libs/freetdm/configure.ac

 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_PREREQ(2.61)
+AC_PREREQ(2.59)
 AC_INIT([openzap],[pre-alpha],[bugs@freeswitch.prg])
 AC_CONFIG_SRCDIR([src/libteletone_detect.c])