[libcroco] configure: bump the prereq

[Ignacio Casal Quinteiro <icq src gnome org>]

commit e7def20ab9a5592f6845534262b3124e06661679
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Sat Oct 31 09:55:54 2015 +0100

    configure: bump the prereq

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 150a910..f082b13 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.5)
+AC_PREREQ(2.64)
 AC_INIT([libcroco],[0.6.9],[http://bugzilla.gnome.org/enter_bug.cgi?product=libcroco],[libcroco])
 AC_CONFIG_SRCDIR([src/cr-input.c])
 AC_CANONICAL_HOST