Bug 198839 Hide element on master page works only for PDF output
1. Insert any element (grid, label, image, text) in the header or footer of the master page. 2. Use the Visibility property to hide the element for all outputs. Expected result: Element does not appear in any of the output formats. Actual result: The element is hidden only in PDF.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/api/impl/EngineTask.java
}
	public List getErrors( )
	{
		return executionContext.getErrors( );
	}
	public IReportContext getReportContext( )
	{
		return executionContext.getReportContext( );
	}
	private void mergeOption( IRenderOption options, String name, Object value )
	{
		if ( options != null )
		{
			if ( value != null && !options.hasOption( name ) )
			{
				options.setOption( name, value );
			}
		}
	}
	/**
	 * intialize the render options used to render the report.
	 * 
	 * the render options are load from:
	 * <li> engine level default options</li>
	 * <li> engine level format options</li>
	 * <li> engine level emitter options</li>
	 * <li> task level options </li>
	 * 
	 */
	protected void setupRenderOption( )