Bug 153040 Template definition should be removed after the report item is deleted
Steps to reproduce: 1.New a report, extends lib.label 2.Convert the label to template report item, and revert it back to the report item 3.Delete the label 4.Remove the included library Expected result: Library can be removed Actual result: A BIRT exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:2.1.0.v20060808-0630 Error Code:Error.LibraryException.LIBRARY_HAS_DESCENDENTS Error Message:The library "Lib" can no be dropped because it has descendents "NewLabel" in the current module.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/metadata/MetaDataDictionary.java
MetaDataException.DESIGN_EXCEPTION_MISSING_CHOICE_SET_NAME );
		if ( choiceSets.containsKey( name ) )
			throw new MetaDataException(
					new String[]{name},
					MetaDataException.DESIGN_EXCEPTION_DUPLICATE_CHOICE_SET_NAME );
		choiceSets.put( name, choiceSet );
	}
	/**
	 * Finds a choice set by name.
	 * 
	 * @param choiceSetName
	 *            the name of the choice set
	 * @return the choice set, or null if the choice set was not found
	 */
	public IChoiceSet getChoiceSet( String choiceSetName )
	{
		return (ChoiceSet) choiceSets.get( choiceSetName );
	}
	/**
	 * Adds a structure definition to the dictionary.
	 * 
	 * @param struct
	 *            the structure definition to add
	 * @throws MetaDataException
	 *             if the structure definition is not valid
	 */
	void addStructure( StructureDefn struct ) throws MetaDataException
	{
		String name = struct.getName( );
		if ( StringUtil.isBlank( name ) )