Bug 164070 Support widows/orphans properties on text item
Support widows/orphans properties on block text item(label, text, data etc), About the definition of widows/orphans, please refer to CSS spec.
model/org.eclipse.birt.report.model.tests/test/org/eclipse/birt/report/model/api/DesignElementHandleTest.java
* {@link org.eclipse.birt.report.model.api.DesignElementHandle#getFontProperty()}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#getIntProperty(String)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#getNumberProperty(String)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#getProperty(String)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#getPropertyHandle(String)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#getStringProperty(String)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#setFloatProperty(String, double)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#setIntProperty}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#setNumberProperty(String, BigDecimal)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#setProperty(String, Object)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#setStringProperty(String, String)}
	 * <li>
	 * {@link org.eclipse.birt.report.model.api.DesignElementHandle#clearProperty(String)}
	 * </ul>
	 * 
	 * @throws Exception
	 *             if any exception
	 */
	public void testPropertyMethods( ) throws Exception
	{