Update QFontMetrics(f) tabArray handling
Update QFontMetrics(f) tabArray handling

Instead of expecting a value, tabArray is used to pass
an array of ints to C++. This commit uses libshiboken
sequenceToIntArray function to build the array.

Reviewed by Marcelo Lira <marcelo.lira@openbossa.org>

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