[atkmm] Require the latest glibmm.

[Murray Cumming <murrayc src gnome org>]

commit d939e18ddd195a48875cbf3da52f811380ab07e8
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Jul 15 15:22:42 2015 +0200

    Require the latest glibmm.
    
    For the latest gmmproc.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 1ceae71..868f053 100644
--- a/configure.ac
+++ b/configure.ac
@@ -50,7 +50,7 @@ MM_AX_CXX_COMPILE_STDCXX_11([noext],[mandatory])
 AC_DISABLE_STATIC
 LT_INIT([win32-dll])
 
-AC_SUBST([ATKMM_MODULES], ['atk >= 1.16 glibmm-2.4 >= 2.45.3'])
+AC_SUBST([ATKMM_MODULES], ['atk >= 1.16 glibmm-2.4 >= 2.45.31'])
 PKG_CHECK_MODULES([ATKMM], [$ATKMM_MODULES])
 
 MM_PKG_CONFIG_SUBST([GTHREAD_CFLAGS], [--cflags-only-other gthread-2.0])