Bug 196272 Text position is incorrect in postscript and ppt.
Text position need to be ajusted according to baseline position.
engine/org.eclipse.birt.report.engine.emitter.ppt/src/org/eclipse/birt/report/engine/emitter/ppt/device/PPTPageDevice.java
{
	private PPTWriter writer;
	private PPTPage currentPage;
	public PPTPageDevice( OutputStream output )
	{
		
		
		writer = new PPTWriter( output );
		writer.start( );
	}
	public void close( ) throws Exception
	{
		writer.end( );
	}
	public IPage newPage( int width, int height, Color backgroundColor )
	{
		if ( currentPage != null )
		{
			currentPage.dispose( );
		}
		currentPage = new PPTPage( writer );
		currentPage.setPageSize( width, height, backgroundColor );
		return currentPage;
	}
}