[gthumb] updated for version 3.5.3

[Paolo Bacchilega <paobac src gnome org>]

commit 0cc22de3da68a7933a644333959de7a24182569a
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Mon Oct 2 21:00:06 2017 +0200

    updated for version 3.5.3

 NEWS         |   33 +++++++++++++++++++++++++++++++++
 configure.ac |    2 +-
 2 files changed, 34 insertions(+), 1 deletions(-)
---
diff --git a/NEWS b/NEWS
index 6de2927..e61e2ab 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,36 @@
+version 3.5.3
+-------------
+
+ New features and user visible changes:
+
+  * Add app menu entries to the gear menu if the app menu is not supported by
+    the desktop environment.
+  * Updated appdata file.
+  * Fixed help markup. (Andre Klapper)
+
+ New or updated application translations:
+
+  * Brazilian Portuguese (Rafael Fontenelle)
+  * catalan (Jordi Mas)
+  * Chinese/Traditional (Cheng-Chia Tseng)
+  * Danish (Ask Hjorth Larsen)
+  * Deutsch (Mario Blättermann)
+  * es (Daniel Mustieles)
+  * French (Claude Paroz)
+  * Hungarian (Balázs Úr)
+  * Indonesian (Kukuh Syafaat)
+  * Italiano (Gianvito Cavasoli)
+  * Polish (Piotr Drąg)
+  * srpski (Miroslav Nikolić)
+  * Swedish (Josef Andersson)
+  * čeština (Marek Černocký)
+  * српски (Мирослав Николић)
+
+ New or updated manual translations:
+
+  * es (Daniel Mustieles)
+  * čeština (Marek Černocký)
+
 version 3.5.2
 -------------
 
diff --git a/configure.ac b/configure.ac
index 9eeb4ca..d6bb298 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 m4_define([gthumb_major_version], [3])
 m4_define([gthumb_minor_version], [5])
-m4_define([gthumb_micro_version], [2])
+m4_define([gthumb_micro_version], [3])
 m4_define([gthumb_version],
           [gthumb_major_version.gthumb_minor_version.gthumb_micro_version])
 m4_define([gthumb_api_version],