[gnome-documents] release: prepare for 3.7.91

[Cosimo Cecchi <cosimoc src gnome org>]

commit 21c24b159e3b08240b386b81317676834e5f5b5c
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Mar 4 17:32:31 2013 -0500

    release: prepare for 3.7.91

 NEWS         |   12 ++++++++++++
 configure.ac |    2 +-
 libgd        |    2 +-
 3 files changed, 14 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index d4e0aac..777389c 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,15 @@
+3.7.91 - "Trans-Siberia Express"
+===============================
+
+- Install a translatable Getting Started with Documents tutorial PDF
+- Use a linked style for the search dropdown button
+- Use a revealer animation for the search dropdown
+- Make page switch widgets insensitive for single-page documents
+- Fix search dropdown stuck after view mode switch
+- Fix back keybinding not working when going back from collections
+- Fix mouse back button not working
+- Fix searchbar appearing when fullscreen in edit mode
+
 3.7.90 - "Romario"
 ==================
 
diff --git a/configure.ac b/configure.ac
index 18a15b3..4adb63d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl -*- mode: m4 -*-
 AC_PREREQ(2.63)
-AC_INIT([gnome-documents],[3.7.90],[],[gnome-documents])
+AC_INIT([gnome-documents],[3.7.91],[],[gnome-documents])
 
 AC_CONFIG_HEADERS([config/config.h])
 AC_CONFIG_SRCDIR([src/main.js])
diff --git a/libgd b/libgd
index 74070d7..a10ae3b 160000
--- a/libgd
+++ b/libgd
@@ -1 +1 @@
-Subproject commit 74070d705b698ab06c4f893c9f00b23cd5234689
+Subproject commit a10ae3b061c32bbe81b6dd5e53446afc835f494e