Merge remote-tracking branch 'origin/5.7.0' into 5.7

Change-Id: I43ddcfab8619ac7c57a1e463f050d8974707001f

dist/changes-5.7.0

 Qt 5.7 introduces many new features and improvements as well as bugfixes
-over the 5.6.x series. For more details, refer to the online documentation
-included in this distribution. The documentation is also available online:
+over the 5.6.x series. Also, there is a change in the licensing terms.
+For more details, refer to the online documentation included in this
+distribution. The documentation is also available online:
 
   https://doc.qt.io
 
@@ -15,6 +16,21 @@ corresponding to tasks in the Qt Bug Tracker:
 Each of these identifiers can be entered in the bug tracker to obtain more
 information about a particular change.
 
+****************************************************************************
+*                          Important License Changes                       *
+****************************************************************************
+
+  This module is no longer available under LGPLv2.1. The libraries are
+  now available under the following licenses:
+    * Commercial License
+    * GNU General Public License v2.0 (LICENSE.GPL2) and later
+    * GNU Lesser General Public License v3.0 (LICENSE.LGPL3)
+
+  The tools are now available under the following licenses:
+    * Commercial License
+    * GNU General Public License 3.0 (LICENSE.GPL3) with exceptions
+      described in The Qt Company GPL Exception 1.0 (LICENSE.GPL3-EXCEPT)
+
 ****************************************************************************
 *                           Library                                        *
 ****************************************************************************