[gtkmm] Build: Use latest pangomm and atkmm.

[Murray Cumming <murrayc src gnome org>]

commit fb4d7c01c8c09bd313e8002f41a239b043d18a79
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Aug 25 14:12:07 2017 +0200

    Build: Use latest pangomm and atkmm.
    
    These uses glibmm-2.56 instead of glibmm-2.54.

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 8d44d0b..88642ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -95,7 +95,7 @@ AS_IF([test "x$enable_static" = xyes],
 # gdkmm really does need GTK+, because part of Gdk::DragContext is in GTK+.
 # The extra gdk-pixbuf-2.0 check is because gdkmm requires a newer gdk-pixbuf than gtk+-4.0 requires.
 # TODO: Remove the mention of cairomm once pangomm needs to depend on such a new version.
-AC_SUBST([GDKMM_MODULES], ['giomm-2.56 >= 2.53.1.1 pangomm-2.42 >= 2.41.3 cairomm-1.16 >= 1.15.4 gtk+-4.0 >= 
3.91.0 gdk-pixbuf-2.0 >= 2.35.5'])
+AC_SUBST([GDKMM_MODULES], ['giomm-2.56 >= 2.53.1.1 pangomm-2.42 >= 2.41.4 cairomm-1.16 >= 1.15.4 gtk+-4.0 >= 
3.91.0 gdk-pixbuf-2.0 >= 2.35.5'])
 
 AS_IF([test "x$gtkmm_host_windows" = xyes],
       [GTKMM_MODULES=$GDKMM_MODULES],
@@ -106,7 +106,7 @@ AS_IF([test "x$gtkmm_host_windows" = xyes],
 GTKMM_ARG_ENABLE_API_ATKMM
 
 AS_IF([test "x$gtkmm_enable_api_atkmm" != xno],
-      [GTKMM_MODULES="atkmm-2.26 >= 2.25.3 $GTKMM_MODULES"])
+      [GTKMM_MODULES="atkmm-2.26 >= 2.25.4 $GTKMM_MODULES"])
 AC_SUBST([GTKMM_MODULES])
 
 AC_SUBST([GTKMM_DEMOS_EXTRA_MODULES], ['epoxy >= 1.2'])