Fix crash when trying to set versioned group properties

If a property isn't available due to revisioning, we print an error message.
Producing the error message should be done with care of obj->type being -1
to avoid out-of-bounds on the output->types array.

Task-number: QTBUG-33179

Change-Id: I7bd420f2dfa0ca2d616340a68999d58022974435
Reviewed-by: Alan Alpert <aalpert@blackberry.com>
Initialize variables in ShaderEffectSource's texture provider.

Change-Id: I3d737b923ee0282f58d7a2ee96824f184469daf5
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
Allow the Keys attached property to override Action shortcuts

The Keys attached property was never getting a chance to handle the
ShortcutOverride event. This change treats ShortcutOverride as a
KeyPress event, passing it through to Keys and thus allowing Qml
code to override the shortcut.

Task-number: QTBUG-32928

Change-Id: I4280eb234e6a0a4351bad45adeb4d8ff28cfb20f
Merge branch 'qtbug-32928' into st