Bug 206093 bar chart: title of y axis is not aligned according to the y axe.
Build ID: v20070924-0630 Steps To Reproduce: 1. Create a bar chart 2. For y axis enter a Title and set the alignment to center 3. See the chart, the y axis title is not aligned according to the y axe; it is center aligned with the height of the chart. More information: see attached chart image example: the first image at the top is how Birt aligned the y axis label and the second image at the bottom is the proposition of aligment according to the y axe
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/AxesRenderHelper.java
IAxisTypeComputation
	{
		double dAxisValue;
		double dAxisStep;
		public void close( ) throws ChartException
		{
			
		}
		public void handlePostEachTick( int i ) throws ChartException
		{
			if ( i == da.size( ) - 2 )
			{
				
				
				dAxisValue = Methods.asDouble( sc.getMaximum( ) ).doubleValue( );
			}
			else
			{
				dAxisValue += dAxisStep;
			}
		}
		public void handlePreEachTick( int i ) throws ChartException