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
throw new MetaDataException(
					MetaDataException.DESIGN_EXCEPTION_MISSING_VALIDATOR_NAME );
		if ( semanticValidators.containsKey( name ) )
			throw new MetaDataException( new String[]{name},
					MetaDataException.DESIGN_EXCEPTION_DUPLICATE_VALIDATOR_NAME );
		semanticValidators.put( name, validator );
	}
	/**
	 * Returns the semantic validator given the name.
	 * 
	 * @param name
	 *            the validator name
	 * @return the semantic validator with the given name. Or return
	 *         <code>null</code>, the there is no validator with the given
	 *         name.
	 */
	public AbstractSemanticValidator getSemanticValidator( String name )
	{
		return (AbstractSemanticValidator) semanticValidators.get( name );
	}
	/**
	 * Returns whether to use validation trigger feature.
	 * 
	 * @return whether to use validation trigger feature 
	 */
	public boolean useValidationTrigger( )
	{
		return useValidationTrigger;
	}
	/**