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.pdf/src/org/eclipse/birt/report/engine/emitter/pdf/PDFPage.java
{
	/**
	 * The Pdf Writer
	 */
	private PdfWriter writer = null;
	/**
	 * Template for totalpage
	 */
	private static PdfTemplate totalPageTemplate = null;
	/**
	 * ContentByte layer for pdf, cb covers cbUnder.
	 */
	private PdfContentByte contentByte, cbUnder = null;
	/**
	 * The height and width of the current pdf page.
	 */
	private float pageHeight = 0f;
	private Logger logger = Logger.getLogger( PDFPage.class.getName( ) );
	public PDFPage( int pageWidth, int pageHeight, Document document,
			PdfWriter writer )
	{
		float ratio = PDFConstants.LAYOUT_TO_PDF_RATIO;
		this.pageHeight = pageHeight / ratio;
		this.writer = writer;
		
		try
		{
			Rectangle pageSize = new Rectangle( pageWidth / ratio, pageHeight
					/ ratio );