Bug 156497 [Regression][Acceptance]Report isn't refreshed when delete used library file.
Description: Report isn't refreshed when delete used library file. Steps to reproduce: 1.New a library, add a label, input actuate. 2.New a report, extend lib.label 3.Delete the library file. 4.Refresh the report in Outline of the report Expected result: Empty label in Layout. Actual result: label with content "actuate" in Layout.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ModuleHandle.java
* Returns included libaries this report design includes directly or
	 * indirectly within the given depth.
	 * 
	 * @param level
	 *            the given depth
	 * @return list of libraries.
	 */
	protected List getLibraries( int level )
	{
		List libraries = module.getLibraries( level );
		List retLibs = new ArrayList( );
		Iterator iter = libraries.iterator( );
		while ( iter.hasNext( ) )
		{
			Library library = (Library) iter.next( );
			retLibs.add( library.handle( ) );
		}
		return Collections.unmodifiableList( retLibs );
	}
	/**
	 * Returns the libraries this report design includes directly. Each in the
	 * returned list is the instance of <code>LibraryHandle</code>.
	 * 
	 * @return the libraries this report design includes directly.
	 */
	public List getLibraries( )
	{
		return getLibraries( IModuleNameScope.DIRECTLY_INCLUDED_LEVEL );
	}
	/**