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/PostscriptWriter.java
out.println( "closepath eoclip newpath" );
	}
	public void clipSave()
	{
		out.println( "clipsave" );
	}
	
	public void clipRestore()
	{
		out.println( "cliprestore" );
	}
	
	/**
	 * Draws a image.
	 * 
	 * @param imageStream
	 *            the source input stream of the image.
	 * @param x
	 *            the x position.
	 * @param y
	 *            the y position.
	 * @param width
	 *            the image width.
	 * @param height
	 *            the image height.
	 * @throws IOException
	 */
	public void drawImage( InputStream imageStream, float x, float y,
			float width, float height ) throws Exception
	{