Bug 134954 Library can't be removed
Steps to reproduce: 1.New a report "a.rptdesign" 2.New a library which is not in the same fold with report, saying "../test/lib.rptlibrary" 3.Report includes the library 4.Remove the library Expected result: The library is removed Actual result: Open XMLSource, the included library structure is still there.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/command/LibraryCommand.java
* 
	 * @param namespace
	 *            namespace of the library.
	 * 
	 * @throws PropertyValueException
	 */
	private void removeIncludeLibrary( String fileName, String namespace )
			throws PropertyValueException
	{
		assert fileName != null;
		assert namespace != null;
		List includeLibraries = module.getIncludedLibraries( );
		Iterator iter = includeLibraries.iterator( );
		while ( iter.hasNext( ) )
		{
			IncludedLibrary includeLibrary = (IncludedLibrary) iter.next( );
			if ( !namespace.equals( includeLibrary.getNamespace( ) ) )
				continue;
			if ( !fileName.endsWith( includeLibrary.getFileName( ) ) )
				continue;
			ElementPropertyDefn propDefn = module
					.getPropertyDefn( Module.LIBRARIES_PROP );
			PropertyCommand propCommand = new PropertyCommand( module, module );
			propCommand.removeItem( new CachedMemberRef( propDefn ),
					includeLibrary );
			break;
		}
	}
}