[glibmm] 2.51.2

[Murray Cumming <murrayc src gnome org>]

commit ae9955dd4d2dee0e3abc42c98cb138a15d2cbf34
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Feb 23 12:31:21 2017 +0100

    2.51.2

 NEWS         |   20 ++++++++++++++++++++
 configure.ac |    2 +-
 2 files changed, 21 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 568d3c1..672b214 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,23 @@
+2.51.2 (unstable):
+Distro packagers should probably not package this yet.
+
+Glib:
+* Object construction: Add custom class init and instance init functions
+  An extra class init function is useful in Gtk::WidgetCustomDraw and
+  Gtk::WidgetCustomSnapshot.
+  (Kjell Ahlstedt) Bug #775348
+
+Gio:
+* Action: #include <glibmm/variant.h>, for convenience.
+  (Daniel Boles) Bug #777953
+* SimpleAction: Make set_state() public.
+  (Daniel Boles) Bug #777953
+
+Documentation:
+* Glib::Variant: Explain how to create "maybe" type.
+  (Daniel Boles) Bug #778219
+
+
 2.51.1.2 (unstable):
 Distro packagers should probably not package this yet.
 
diff --git a/configure.ac b/configure.ac
index 5c7c7cb..6167baf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,7 +15,7 @@
 ## You should have received a copy of the GNU Lesser General Public License
 ## along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-AC_INIT([glibmm], [2.51.1.2],
+AC_INIT([glibmm], [2.51.2],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=glibmm],
         [glibmm], [http://www.gtkmm.org/])
 AC_PREREQ([2.59])