Bug 134671 Legend title is displayed incorrectly.
Legend title is displayed incorrectly. Steps: 1.Import the attached report design file 2.Preview Actual Results: 1.Legend title is "Company", but displayed as "=Company" Expected Results: 1.Legend title is displayed correctly.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/render/BaseRenderer.java
final PolygonRenderEvent pre = (PolygonRenderEvent) ( (EventObjectCache) ipr ).getEventObject( StructureSource.createChartBlock( b ),
						PolygonRenderEvent.class );
				pre.setPoints( loaHotspot );
				iev.setHotSpot( pre );
				ipr.enableInteraction( iev );
			}
		}
	}
	/**
	 * 
	 * @param ipr
	 * @param b
	 * 
	 * @throws RenderingException
	 */
	public void renderLabel( IPrimitiveRenderer ipr, Block b, Object oSource )
			throws ChartException
	{
		if ( !b.isVisible( ) )
		{
			return;
		}
		renderBlock( ipr, b, oSource );
		final double dScale = getDevice( ).getDisplayServer( )
				.getDpiResolution( ) / 72d;
		final LabelBlock lb = (LabelBlock) b;
		final TextRenderEvent tre = (TextRenderEvent) ( (EventObjectCache) ipr ).getEventObject( oSource,
				TextRenderEvent.class );
		
		final String sRestoreValue = tre.updateFrom( lb, dScale, rtc );