Updated custom converter for QBool to use ValueTypeConverter instead of ConverterBase.
Updated custom converter for QBool to use ValueTypeConverter instead of ConverterBase.

Reviewed by Hugo Parente <hugo.lima@openbossa.org>
Reviewed by Lauro Moura <lauro.neto@openbossa.org>

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