Support any QObject in QUiLoader.load function.
Support any QObject in QUiLoader.load function.

Fix bug #392.

Reviewer: Luciano Wolf <c353ae890f0e6de8473e43011f009ccd38a3c452@openbossa.org>
         Marcelo Lira <marcelo.lira@openbossa.org>

pankajp/pyside,M4rtinK/pyside-bb10,PySide/PySide,IronManMark20/pyside2,RobinD42/pyside,M4rtinK/pyside-bb10,PySide/PySide,PySide/PySide,RobinD42/pyside,pankajp/pyside,enthought/pyside,gbaty/pyside2,qtproject/pyside-pyside,M4rtinK/pyside-bb10,gbaty/pyside2,M4rtinK/pyside-android,pankajp/pyside,M4rtinK/pyside-bb10,pankajp/pyside,IronManMark20/pyside2,qtproject/pyside-pyside,BadSingleton/pyside2,BadSingleton/pyside2,PySide/PySide,gbaty/pyside2,IronManMark20/pyside2,M4rtinK/pyside-android,pankajp/pyside,RobinD42/pyside,enthought/pyside,M4rtinK/pyside-android,IronManMark20/pyside2,qtproject/pyside-pyside,RobinD42/pyside,enthought/pyside,BadSingleton/pyside2,gbaty/pyside2,M4rtinK/pyside-bb10,enthought/pyside,M4rtinK/pyside-android,BadSingleton/pyside2,M4rtinK/pyside-bb10,RobinD42/pyside,M4rtinK/pyside-android,enthought/pyside,IronManMark20/pyside2,enthought/pyside,RobinD42/pyside,M4rtinK/pyside-android,PySide/PySide,RobinD42/pyside,qtproject/pyside-pyside,BadSingleton/pyside2,enthought/pyside,gbaty/pyside2,qtproject/pyside-pyside