Bug 137444 Can not preview the old file with PDF
Details: Can not preview the old file with PDF Please run the attached file with PDF, it can not preview. But HTML and web view is no problem.
engine/org.eclipse.birt.report.engine.emitter.pdf/src/org/eclipse/birt/report/engine/emitter/pdf/PDFEmitter.java
* @param text				the textArea to be drawed
	 */
	protected void drawText( ITextArea text )
	{	 
		IStyle style = text.getStyle();
		assert style!=null; 
		
	    
	    
		ContainerPosition curPos;
		if ( !containerStack.isEmpty() )
			curPos = (ContainerPosition)containerStack.peek();	
		else 
			curPos = new ContainerPosition(0, 0);
		int textX = curPos.x + text.getX();
		int textY = curPos.y + text.getY();
		float fontSize = text.getFontInfo().getFontSize();
		float characterSpacing = pdfMeasure( PropertyUtil.getDimensionValue(
	        	style.getProperty(StyleConstants.STYLE_LETTER_SPACING)) );
		float wordSpacing = pdfMeasure( PropertyUtil.getDimensionValue(
	        	style.getProperty(StyleConstants.STYLE_WORD_SPACING)) );
		cb.saveState();
		
	    cb.beginText();
	    
	    cb.setFontAndSize(text.getFontInfo().getBaseFont(), fontSize); 
		cb.setCharacterSpacing(characterSpacing);
		cb.setWordSpacing(wordSpacing);
	       
	    placeText(cb, text.getFontInfo(), layoutAreaX2PDF(textX),