[gnome-calendar] Bump version to 3.15.91 for release

[Erick Pérez Castellanos <erickpc src gnome org>]

commit 81241a19e8f16671c22e06b0ea18f30e12dc3d33
Author: Erick Pérez Castellanos <erick red gmail com>
Date:   Mon Mar 2 14:13:29 2015 -0500

    Bump version to 3.15.91 for release

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index f4f1d66..2248fed 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl -*- mode: m4 -*-
 AC_PREREQ([2.69])
-AC_INIT([gnome-calendar],[3.15.90],[http://bugzilla.gnome.org/enter_bug.cgi?product=gnome-calendar],[gnome-calendar],[https://wiki.gnome.org/Apps/Calendar])
+AC_INIT([gnome-calendar],[3.15.91],[http://bugzilla.gnome.org/enter_bug.cgi?product=gnome-calendar],[gnome-calendar],[https://wiki.gnome.org/Apps/Calendar])
 
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_SRCDIR([src/main.c])