[polari] Bump version to 3.17.3

[Florian Müllner <fmuellner src gnome org>]

commit 2f927304e874efc0bdcad10f3472bb903a9ecf2e
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Jul 17 00:02:22 2015 +0200

    Bump version to 3.17.3
    
    Update NEWS.

 NEWS         |   11 +++++++++++
 configure.ac |    2 +-
 2 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index db95382..738aca9 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,14 @@
+3.17.3 - "It's nice... in a Hideous Sort of Way"
+================================================
+* Color contact availability in private chats [Bastian; #748703]
+
+Contributors:
+  Bastian Ilsø, Florian Müllner
+
+Translations:
+  Victor Ibragimov [tg], Cédric Valmary [oc], Daniel Șerbănescu [ro],
+  Pedro Albuquerque [pt]
+
 
 3.17.1 - "The Texas Chainsaw Mascara"
 =====================================
diff --git a/configure.ac b/configure.ac
index c4bee9e..ce44f95 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-AC_INIT([polari],[3.17.1],[https://bugzilla.gnome.org/enter_bug.cgi?product=polari],[polari])
+AC_INIT([polari],[3.17.3],[https://bugzilla.gnome.org/enter_bug.cgi?product=polari],[polari])
 
 AC_SUBST([APP_ID],[org.gnome.Polari])