Clarify use of Q_INIT_RESOURCE

The Q_INIT_RESOURCE macro is needed if a library itself uses resources, in
which case the Q_INIT_RESOURCE can and should happen in the library (like
we do for eg. widget styles), or if a library exposes resources that are
supposed to be used by the library clients, in which case the macro needs
to be put in the application code.

The distinction between the two, and the fact that resources built as part
of the main executable do not need the explicit initialization, were not
all that clear.

This was evident by the lack of Q_INIT_RESOURCE in our own Qt libraries,
and the various Q_INIT_RESOURCE calls in our examples where they are not
needed.

Change-Id: I40258458e9fdf9ee5502c212971fb3d90b4fc388
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
iOS: Enable threaded OpenGL.

This change activates ThreadedOpenGL and ThreadedPixmaps capabilities
in the iOS integration. QIOSContext is expanded with a support for
a shared context.

Change-Id: I56615c870a24e17850ad2748421c54e015de3ab2
Reviewed-by: Ian Dean <ian@mediator-software.com>
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Clean up QWindowsSessionManager.

Fix spelling error in method name and inline simple functions.

Change-Id: I7f2a67fb1951b58874b09002ee57e15e75561727
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
qdoc: Eliminate qobject_cast() collision

Two template functions for qboject_cast() are defined
in qwidget.h that confuse qdoc because qdoc doesn't
handle template functions correctly. In this case, the
documentation for all qobject_cast() functions appears
in qobject.cpp where it is declared to be related to
QObject. This fix surrounds the template functions in
qwidget.h with #ifndef Q_QDOC ... #endif, since qdoc doesn't
need to see them.

This fix unmasks a linking bug QTBUG-34564, which will
be fixed separately.

Task-number: QTBUG-34505
Change-Id: I97fd32cc563bfa4a232819c097f41be56adf0114
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Remove Q_INIT_RESOURCE_EXTERN

It's not providing any convenience over using Q_INIT_RESOURCE, which does
its own extern, were never documented, and was added back in 2010 without
any commit message justifying its existence.

Change-Id: I1ca9a042d3f4fca34007d28b140661c50064f11b
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Resolve Qt module deps before determining if QML import scanner is needed

The qtAddModules functions resolves deps internally, but doesn't affect
the original QT and QT_PRIVATE variables. We need to pick up situations
such as the user adding QT += quick, which implies QT += qml through
the QtQuick module's dependecies.

Change-Id: I14411dbea3e4f7402be404073a3fe8f18dbb165f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Disallow deep or widely nested entity references.

Nested references with a depth of 2 or greater will fail. References
that partially expand to greater than 1024 characters will also fail.

Change-Id: Id4e49d6f7cf51e3a247efdb4c6c7c9bd9b223f6e
Reviewed-by: Richard J. Moore <rich@kde.org>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>