configure.ac: bump AC_PREREQ to 2.60

All other xorg modules require at least 2.60 (released in 2006), so we
may as well increase it to match.  It's also doubtful anyone tests the
build with 2.59 (from 2003), so it may not even work anyway.

diff --git a/configure.ac b/configure.ac
index 51face7a450dc0e594477e6becb58b3d9bb8f85e..8f481a0a077e3a6eff0b9e916cb78d18ececb8aa 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to create configure.
 
-AC_PREREQ([2.59])
+AC_PREREQ([2.60])
 
 dnl Versioning - scrape the version from configs/default
 m4_define([mesa_version],