Bug 176450 Support link to CSS Feature(Model Part)
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/ModelUtil.java
return element.getStringProperty( element.getRoot( ), propName );
	}
	/**
	 * Checks if report design contains the same library as the target library
	 * which user wants to export. If no exception throws , that stands for user
	 * can export report design to library. Comparing with the obsolute file
	 * name path, if file is the same , throw <code>SemanticException</code>
	 * which error code is include recursive error.
	 * 
	 * For example , the path of library is "C:\test\lib.xml" .The followings
	 * will throw semantic exception:
	 * 
	 * <ul>
	 * <li> design file and library in the same folder: </li>
	 * <li> <list-property name="libraries"> <structure> <property
	 * name="fileName">lib.xml</property> <property name="namespace">lib</property>
	 * </structure> </list-property> </li>
	 * </ul>
	 * <ul>
	 * <li> folder of design file is "C:\design" </li>
	 * <li> <list-property name="libraries"> <structure> <property
	 * name="fileName">..\test\lib.xml</property> <property
	 * name="namespace">lib</property> </structure> </list-property> </li>
	 * </ul>
	 * 
	 * @param designToExport
	 *            handle of the report design to export
	 * @param targetLibraryHandle
	 *            handle of target library
	 * @return if contains the same absolute file path , return true; else