[gnome-calculator] Prepare 3.15.91

[Michael Catanzaro <mcatanzaro src gnome org>]

commit f5536acc4abe43c91c28e6126b83b4d93aa21794
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Mar 2 16:28:56 2015 -0600

    Prepare 3.15.91

 NEWS         |    5 +++++
 configure.ac |    2 +-
 2 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 66620e0..278bfda 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,8 @@
+Overview of changes in gnome-calculator 3.15.91
+    * New : Remove red color from clear button (Allan Day)
+    * Update : Powers page in documentation (Sebastian Rasmussen, Ekaterina Gerasimova)
+    * Update : Translations (Translation team)
+
 Overview of changes in gnome-calculator 3.15.4
     * New : Keyboard mode (Elita Lobo)
     * New : MPFR back-end (Daniel Renninghoff)
diff --git a/configure.ac b/configure.ac
index 17b1472..e206ef4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl Process this file with autoconf to produce a configure script.
 
-AC_INIT(gnome-calculator, 3.15.4)
+AC_INIT(gnome-calculator, 3.15.91)
 AC_CONFIG_MACRO_DIR([m4])
 AM_INIT_AUTOMAKE([1.11 no-dist-gzip dist-xz foreign])
 AM_SILENT_RULES([yes])