Always relay configure notify events from XCB plugin.

QWindow no longer sets its geometry member in setGeometry(), so it needs
to happen through handleGeometryChange() from the platform plugin.

Change-Id: Ia22b788c65dba4fc4b1efed1965ccd9473f1f743
Reviewed-on: http://codereview.qt.nokia.com/3709
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>

src/plugins/platforms/xcb/qxcbwindow.cpp

@@ -1127,9 +1127,6 @@ void QXcbWindow::handleConfigureNotifyEvent(const xcb_configure_notify_event_t *
 
     QRect rect(xpos, ypos, event->width, event->height);
 
-    if (rect == geometry())
-        return;
-
     QPlatformWindow::setGeometry(rect);
     QWindowSystemInterface::handleGeometryChange(window(), rect);