[atkmm] 2.53.3

[Murray Cumming <murrayc src gnome org>]

commit c6ecc83d3b3b3087df465813064c06ecf3d0b92e
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Apr 26 23:21:42 2017 +0200

    2.53.3

 NEWS         |   10 ++++++++++
 configure.ac |    4 ++--
 2 files changed, 12 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index d98bc25..72c2924 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,13 @@
+atkmm 2.25.3 (unstable):
+
+* Use C++11 enum classes instead of old-style enums, and put some enums
+  inside relevant class declarations:
+  - Relation: Change RelationType to Relation::Type.
+  - Text: Move enums into the class.
+  (Kjell Ahlstedt, Murray Cumming)
+* Build: Windows: Visual Studio builds: Update glibmm ABI version.
+
+
 atkmm 2.25.2 (unstable):
 
 * Build: Use glibmm-2.54 instead of glibmm-2.52
diff --git a/configure.ac b/configure.ac
index 6c809b7..2ba84df 100644
--- a/configure.ac
+++ b/configure.ac
@@ -19,7 +19,7 @@
 # pkg-config name as before and is meant to be binary compatible.  Thus for the
 # time being, the version number cannot be brought in line with ATK, since that
 # would break compatibility.
-AC_INIT([atkmm], [2.25.2], [https://bugzilla.gnome.org/enter_bug.cgi?product=atkmm],
+AC_INIT([atkmm], [2.25.3], [https://bugzilla.gnome.org/enter_bug.cgi?product=atkmm],
         [atkmm], [http://www.gtkmm.org/])
 AC_PREREQ([2.59])
 
@@ -51,7 +51,7 @@ MM_AX_CXX_COMPILE_STDCXX([14], [noext], [mandatory])
 AC_DISABLE_STATIC
 LT_INIT([win32-dll])
 
-AC_SUBST([ATKMM_MODULES], ['atk >= 1.18 glibmm-2.54 >= 2.53.1'])
+AC_SUBST([ATKMM_MODULES], ['atk >= 1.18 glibmm-2.54 >= 2.53.1.1'])
 PKG_CHECK_MODULES([ATKMM], [$ATKMM_MODULES])
 
 MM_PKG_CONFIG_SUBST([GTHREAD_CFLAGS], [--cflags-only-other gthread-2.0])