function _fnSetCellData( oSettings, iRow, iCol, val )
	{
		var oCol = oSettings.aoColumns[iCol];
		var oData = oSettings.aoData[iRow]._aData;
	
		oCol.fnSetData( oData, val );
	}
Set the value for a specific cell, into the internal data cache
 @param {object} oSettings dataTables settings object
 @param {int} iRow aoData row id
 @param {int} iCol Column index
 @param {*} val Value to set
 @memberof DataTable#oApi