Add VK_LWIN and VK_RWIN keys as meta modifiers

Task-number: QTBUG-43163
Change-Id: Iee9bb4b48dc7ea9f806abd6b07648cce46a79b6a
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
XCB: Don't override non-existent method when QT_NO_OPENGL

QBackingStore only has a toImage() method if OpenGL is enabled. I
noticed this because compilation failed for me, thanks to
Q_DECL_OVERRIDE.

qxcbbackingstore.h:60:12: error: ‘QImage QXcbBackingStore::toImage() const’ marked override, but does not override
     QImage toImage() const Q_DECL_OVERRIDE;

Change-Id: I6b45ef41c53d819d81fe657f26adc1f630fec6bb
Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
Harmonize QPA TrayIcon showMessage parameter order

Parameters were misnamed in some places but still managed to pass them
through in the right order.  Rename to avoid confusion, and keep the
parameter order the same as in QSystemTrayIcon::showMessage.

Change-Id: Ib4c8fff15eff15034c4ea64757803b118e487144
Reviewed-by: Marco Martin <mart@kde.org>
Reviewed-by: Jørgen Lind <jorgen.lind@theqtcompany.com>
Remove support for NTLMv1

NTLVMv1 is of historic interest only, since even Windows NT 4.0 already
supported NTLMv2. NTLVMv1 is also considered to be insecure.

Removing the code (that was not compiled in by default anyway) allows us
also to get rid of 3rdparty/des.

Change-Id: I5a9778f4250e1974c270ee6be539332318c09443
Reviewed-by: Richard J. Moore <rich@kde.org>