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/api/core/UserPropertyDefn.java
* 
	 * @param module
	 *            the module
	 * @param prop
	 *            definition of the property to get
	 * 
	 * @return value of the property.
	 */
	public Object getProperty( Module module, PropertyDefn prop )
	{
		return getLocalProperty( module, prop );
	}
	/**
	 * Sets the value for the given property definition.
	 * 
	 * @param prop
	 *            definition of the property to set
	 * @param value
	 *            value to set
	 */
	public void setProperty( PropertyDefn prop, Object value )
	{
		assert prop != null;
		String memberName = prop.getName( );
		if ( memberName.equals( TYPE_MEMBER ) )
		{
			type = MetaDataDictionary.getInstance( ).getPropertyType(
					(String) value );
		}
		else if ( memberName.equals( NAME_MEMBER ) )