[cluttermm/cluttermm-1-24] Increase version to 1.23.1

[Murray Cumming <murrayc src gnome org>]

commit 4a9d3ce1a4c01534f320d2388ccd7997c685472c
Author: Ian Martin <martin_id vodafone co nz>
Date:   Fri Mar 4 12:32:51 2016 +1300

    Increase version to 1.23.1

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3a434d1..70c9989 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 program.  If not, see <http://www.gnu.org/licenses/>.
 
-AC_INIT([cluttermm], [1.17.3],
+AC_INIT([cluttermm], [1.23.1],
         [http://bugzilla.gnome.org/enter_bug.cgi?product=cluttermm],
         [cluttermm], [http://www.gtkmm.org/])
 AC_PREREQ([2.59])