QNX: Fix tst_qfilesystemwatcher

If QNX does not have inotify there is no native engine.

Change-Id: I042efd0b59f916f9e0b55bbe5c7f3fe7bb6914c8
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>
QNX: fix race condition when clearing transparent buffer

Block flush until all bits have been flushed. This prevents Qt from trying to
draw over the buffer while it is still being cleared.

Change-Id: I49b90a7653ec3768411a1a94837bb31fec4d44e8
Reviewed-by: Frank Osterfeld <frank.osterfeld@kdab.com>
Reviewed-by: Andreas Holzammer <andreas.holzammer@kdab.com>
Reviewed-by: Bernd Weimer <bweimer@blackberry.com>
Cocoa: Make QMacNativeWidget event processing work

Don't interrupt the Qt event loop if the Qt event
loop isn't running (meaning processEvents has not/
will not be called). This can happen in the QMacNativeWidget
or plugin case where the native code calls [NSApp run]
and QApplication::exec() is never called.

In Qt 4 this was not necessary since UI event
processing was more direct: QCocoaView would call
QCoreApplication::sendMouseEvent/sendSpontaneousEvent
directly on mouse events.

Task-number: QTBUG-36225
Change-Id: I2894cbbca66a902652c9f8bc916e94ad8ce0e18e
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Cocoa: Adapt to Xcode 6 clang version sudden pickiness

Yes, that means OS X Yosemite fix.

Change-Id: I236f7af7b803de24ff0895e04c9a9253b5cfdb3b
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Cocoa: clear queued user input events when window is destroyed

QCocoaEventDispatcher stores user input events in a queue in certain
cases. If the target of those events is destroyed, the events are later
sent to the stale window, causing a crash.

Task-number: QTBUG-39211
Change-Id: Ie55d2df5697c742bcb644ebf8c5028015a0b8148
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>