Added a change log for Qt 5.6

...and linked to it from the related files

This is mostly a template for now, but I wanted to add the
Qt Serial Bus Module.

Change-Id: I3a612b4ddaf7961374cbdf6845093f7b711a86f7
Reviewed-by: Venugopal Shivashankar <venugopal.shivashankar@digia.com>

doc/src/qt5-intro.qdoc

@@ -502,6 +502,7 @@
 
     \section1 Related Topics
     \list
+    \li \l{What's New in Qt 5.6}
     \li \l{What's New in Qt 5.5}
     \li \l{What's New in Qt 5.4}
     \li \l{What's New in Qt 5.3}

doc/src/whatsnew/whatsnew50.qdoc

@@ -378,6 +378,8 @@
     \section1 Additions to Other Qt 5 Releases
 
     \list
+    \li \l{What's New in Qt 5.6}
+    \li \l{What's New in Qt 5.5}
     \li \l{What's New in Qt 5.4}
     \li \l{What's New in Qt 5.3}
     \li \l{What's New in Qt 5.2}

doc/src/whatsnew/whatsnew51.qdoc

@@ -228,6 +228,8 @@
     \section1 Additions to Other Qt 5 Releases
 
     \list
+    \li \l{What's New in Qt 5.6}
+    \li \l{What's New in Qt 5.5}
     \li \l{What's New in Qt 5.4}
     \li \l{What's New in Qt 5.3}
     \li \l{What's New in Qt 5.2}

doc/src/whatsnew/whatsnew52.qdoc

@@ -243,6 +243,8 @@
     \section1 Additions to Other Qt 5 Releases
 
     \list
+    \li \l{What's New in Qt 5.6}
+    \li \l{What's New in Qt 5.5}
     \li \l{What's New in Qt 5.4}
     \li \l{What's New in Qt 5.3}
     \li \l{What's New in Qt 5.1}

doc/src/whatsnew/whatsnew53.qdoc

@@ -244,6 +244,8 @@
     \section1 Additions to Other Qt 5 Releases
 
     \list
+    \li \l{What's New in Qt 5.6}
+    \li \l{What's New in Qt 5.5}
     \li \l{What's New in Qt 5.4}
     \li \l{What's New in Qt 5.2}
     \li \l{What's New in Qt 5.1}

doc/src/whatsnew/whatsnew54.qdoc

@@ -205,6 +205,8 @@
     \section1 Additions to Other Qt 5 Releases
 
     \list
+    \li \l{What's New in Qt 5.6}
+    \li \l{What's New in Qt 5.5}
     \li \l{What's New in Qt 5.3}
     \li \l{What's New in Qt 5.2}
     \li \l{What's New in Qt 5.1}

doc/src/whatsnew/whatsnew55.qdoc

@@ -246,6 +246,7 @@
     \section1 Additions to Other Qt 5 Releases
 
     \list
+    \li \l{What's New in Qt 5.6}
     \li \l{What's New in Qt 5.4}
     \li \l{What's New in Qt 5.3}
     \li \l{What's New in Qt 5.2}

doc/src/whatsnew/whatsnew56.qdoc

+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: http://www.gnu.org/copyleft/fdl.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \page whatsnew56.html
+    \title What's New in Qt 5.6
+    \brief Lists the new features in Qt 5.6.
+
+    \section1 New Modules
+
+    \list
+    \li \l[Qt3DCore]{Qt3D Module}{Qt 3D}
+    \li \l[QtLocation]{Qt Location}
+    \li \l[QtSerialBus]{Qt Serial Bus}
+    \list
+        \li Included as a technology preview.
+        \li Provides a framework for accessing serial bus backends in general, and a plugin for
+            accessing the SocketCAN backend in particular.
+    \endlist
+    \endlist
+
+    \section1 New Features in Qt 5.6
+
+    \section2 Qt Bluetooth Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt Core Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt GUI Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt Multimedia Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt NFC Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt Network Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt Platform Abstraction (QPA)
+    \list
+        \li
+    \endlist
+
+    \section2 Qt QML Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt Quick Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt Quick Controls Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt WebEngine Module
+    \list
+        \li
+    \endlist
+
+    \section2 Qt WebView Module
+    \list
+        \li
+    \endlist
+
+    \section1 Deprecated Functionality
+
+    The following modules are deprecated in Qt 5.6:
+    \list
+        \li
+    \endlist
+
+    These modules are still included in Qt 5.6, but are considered for removal in future releases.
+
+    \section1 List of API Changes
+
+    The pages below contain a list of API changes in Qt 5.6:
+    \list
+    \li \l{New Classes and Functions in Qt 5.6}
+    \li \l{Obsolete Classes}
+    \endlist
+
+    \section1 Additions to Other Qt 5 Releases
+
+    \list
+        \li \l{What's New in Qt 5.5}
+        \li \l{What's New in Qt 5.4}
+        \li \l{What's New in Qt 5.3}
+        \li \l{What's New in Qt 5.2}
+        \li \l{What's New in Qt 5.1}
+        \li \l{What's New in Qt 5.0}
+    \endlist
+
+*/
+
+/*!
+    \page newclasses56.html
+    \title New Classes and Functions in Qt 5.6
+    \brief A list of new APIs in Qt 5.6.
+
+    This page contains a comprehensive list of all new classes and functions introduced in Qt 5.6.
+    Links to new APIs in previous Qt 5 releases are found at the bottom of this page.
+
+    \sincelist 5.6
+
+    \section1 Additions to Other Qt 5 Releases
+
+    \list
+        \li \l{What's New in Qt 5.5}
+        \li \l{What's New in Qt 5.4}
+        \li \l{What's New in Qt 5.3}
+        \li \l{What's New in Qt 5.2}
+        \li \l{What's New in Qt 5.1}
+        \li \l{What's New in Qt 5.0}
+    \endlist
+*/
+