Merge remote-tracking branch 'origin/5.5' into 5.6

Change-Id: Ia2a92924bf947cfe7fe6e0d7e6f680addd94b863

LICENSE.LGPLv3

@@ -5,6 +5,8 @@
 
  You may use, distribute and copy the Qt GUI Toolkit under the terms of
  GNU Lesser General Public License version 3, which is displayed below.
+ This license makes reference to the version 3 of the GNU General
+ Public License, which you can find in the LICENSE.GPLv3 file.
 
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