[gtk+] Bump the required version of autoconf to 2.62

[Johan Dahlin <johan src gnome org>]

commit b3c48a4501d77c15ae236f1fe4514cc02de187f3
Author: Johan Dahlin <johan gnome org>
Date:   Wed Dec 9 20:12:46 2009 -0200

    Bump the required version of autoconf to 2.62
    
    It's need by the new introspection macro.

 configure.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.in b/configure.in
index 426750e..8a95a46 100644
--- a/configure.in
+++ b/configure.in
@@ -1,6 +1,6 @@
 # Process this file with autoconf to produce a configure script.
 # require autoconf 2.54
-AC_PREREQ(2.54)
+AC_PREREQ(2.62)
 
 # Making releases:
 #   GTK_MICRO_VERSION += 1;