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
float containerHeight = isTotalPage
				? totalPageTemplate.getHeight( )
				: pageHeight;
		currentContentByte.saveState( );
		
		currentContentByte.beginText( );
		if ( null != color )
		{
			currentContentByte.setColorFill( color );
			currentContentByte.setColorStroke( color );
		}
		BaseFont font = fontInfo.getBaseFont( );
		float fontSize = fontInfo.getFontSize( );
		currentContentByte.setFontAndSize( font, fontSize );
		currentContentByte.setCharacterSpacing( characterSpacing );
		currentContentByte.setWordSpacing( wordSpacing );
		float baseline = convertToPoint( fontInfo.getBaseline( ) );
		float transformedY = transformY( textY, baseline, containerHeight );
		placeText( currentContentByte, fontInfo, textX, transformedY );
		if ( ( font.getFontType( ) == BaseFont.FONT_TYPE_TTUNI )
				&& IStyle.JUSTIFY_VALUE.equals( align ) && wordSpacing > 0 )
		{
			int idx = text.indexOf( ' ' );
			if ( idx >= 0 )
			{
				float spaceCorrection = -wordSpacing * 1000 / fontSize;
				PdfTextArray textArray = new PdfTextArray( text.substring( 0,
						idx ) );
				int lastIdx = idx;
				while ( ( idx = text.indexOf( ' ', lastIdx + 1 ) ) >= 0 )