From Qt 5.7 -> examples are lisenced under BSD license, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/


Updated license headers to use new BSD header instead of LGPL21 one
(in those files which will be under BSD)

Change-Id: I0166fb7434185f9d151631a51124945150cdd633
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>