[PATCH xserver] autoconf: the minimum required level for autoconf is 2.60

[Gaetan Nadon]

The toolchain requirements are documented here:
http://www.x.org/wiki/ModularDevelopersGuide#Required_Tools

Note that autoconf features only found in versions later
than 2.60 must not be used.

Signed-off-by: Gaetan Nadon <memsize at videotron.ca>
---
 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/configure.ac b/configure.ac
index e4fcba4..e7b51f6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,7 +25,7 @@ dnl          an unwitting cast of miscellaneous others
 dnl
 dnl Process this file with autoconf to create configure.
 
-AC_PREREQ(2.57)
+AC_PREREQ(2.60)
 AC_INIT([xorg-server], 1.11.99.1, [https://bugs.freedesktop.org/enter_bug.cgi?product=xorg], xorg-server)
 RELEASE_DATE="2011-11-20"
 AC_CONFIG_SRCDIR([Makefile.am])
-- 
1.7.4.1