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.postscript/src/org/eclipse/birt/report/engine/emitter/postscript/device/PostscriptPage.java
}
	public void drawImage( byte[] imageData, String extension, int imageX, int imageY,
			int height, int width, String helpText ) throws Exception
	{
		InputStream input = new ByteArrayInputStream( imageData );
		drawImage( input, imageX, imageY, height, width, helpText );
	}
	public void drawImage( String uri, String extension, int imageX,
			int imageY, int height, int width, String helpText )
			throws Exception
	{
		if ( uri == null )
		{
			return;
		}
		drawImage( new URL( uri ).openStream( ), imageX, imageY, height, width,
				helpText );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.engine.emitter.postscript.page.IPageDevice#drawLine(float,
	 *      float, float, float, float, java.awt.Color, java.lang.String)
	 */
	public void drawLine( int startX, int startY, int endX, int endY,
			int width, Color color, String lineStyle )
	{
		writer.drawLine( convertToPoint( startX ), convertToPoint( startY ),
				convertToPoint( endX ), convertToPoint( endY ),
				convertToPoint( width ), color, lineStyle );