[glibmm] 2.51.5

[Murray Cumming <murrayc src gnome org>]

commit 7062e6f14eb6846f610650bc3e33572508c3b2ed
Author: Murray Cumming <murrayc murrayc com>
Date:   Mon Mar 13 22:47:47 2017 +0100

    2.51.5

 NEWS         |   16 ++++++++++++++++
 configure.ac |    2 +-
 2 files changed, 17 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 672b214..cb86808 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,19 @@
+2.51.5
+
+Gio:
+* Application: get_default(): Correct the reference counting.
+  (KJell Ahlstedt) Bug #779936 (James Legg)
+* Add PropertyAction.
+  (Kjell Ahlstedt)
+
+Glib:
+* Remove Glib::unconst() because it is unused and unnecessary.
+  (Kjell Ahlstedt)
+* Variant: Add template specialization for std::tuple,
+  and a test.
+  (Alexander Rössler, Kjell Ahlstedt) Bug #777791
+
+
 2.51.2 (unstable):
 Distro packagers should probably not package this yet.
 
diff --git a/configure.ac b/configure.ac
index 6167baf..32353dc 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], [2.51.2],
+AC_INIT([glibmm], [2.51.5],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=glibmm],
         [glibmm], [http://www.gtkmm.org/])
 AC_PREREQ([2.59])