Bug 194371 Use page emitter framework to implement ppt emitter.
In order to keep consistent with pdf and postscript, ppt need to use page emitter framework.
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/PPTEmitter.java
{
	
	protected static Logger logger = Logger.getLogger( PPTEmitter.class.getName( ) );
	
	protected final PPTRender render = new PPTRender( );
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.emitter.IContentEmitter#getOutputFormat()
	 */
	public String getOutputFormat( )
	{
		return render.getOutputFormat( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.emitter.IContentEmitter#initialize(org.eclipse.birt.report.engine.emitter.IEmitterServices)
	 */
	public void initialize( IEmitterServices service )
	{
		render.initialize( service );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.emitter.IContentEmitter#startPage(org.eclipse.birt.report.engine.content.IPageContent)
	 */