Cleanup some Windows printengine code to make it look more readable

Change-Id: I9e014a2a68b1502d20b88adccab39b7394b2ad86
Reviewed-by: John Layt <jlayt@kde.org>
Fix silly typo in a macro for QAtomicInt's constructor

The T was missing in QT_BASIC_ATOMIC_HAS_CONSTRUCTORS. This makes
QAtomicInt's constructor become constexpr.

Change-Id: Ibe58ff36517c5d05ce8af9c0f28169fa63521632
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
ANGLE D3D11: Always execute QueryInterface

ASSERT removes the condition when building for release mode. However,
QueryInterface must be called in any case. Adopt to using ASSERT(false)
like in other occurrences in angle.

This is a follow-up patch to 331bc16afd23414493b842819e0b747e8f364243

Change-Id: I4413bab06b5a529fcbd09bbc20828fcdcf4e4fc6
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Andrew Knight <andrew.knight@digia.com>
Make the default vertical alignment configurable

This is a prerequisite of sharing the layout engine of QGraphicsLayout
with the engine of QtQuick.Layouts.

Change-Id: Iae566c0e51d234b836cf818b541d4284bd78bbee
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>