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
	{
		CDateTime cdt, cdtAxisValue;
		int iUnit, iStep;
		IDateFormatWrapper sdf;
		public void close( ) throws ChartException
		{
			
		}
		public void handlePostEachTick( int i ) throws ChartException
		{
			
			cdt = cdtAxisValue.forward( iUnit, iStep * ( i + 1 ) );
		}
		public void handlePreEachTick( int i ) throws ChartException
		{
			try
			{
				sText = ValueFormatter.format( cdt, fs, ax.getRunTimeContext( )
						.getULocale( ), sdf );
			}
			catch ( ChartException dfex )
			{
				logger.log( dfex );
				sText = IConstants.NULL_STRING;
			}
			la.getCaption( ).setValue( sText );
		}