Bug 197228 Need updaet createdBy info when serialize the module
When open module, designer will pass the property map which contains the createdBy info. this info should be retained by moduleHandle and then be updated and written when doing serialization. Note if this info is null, model should not update it during serialization. This could happen for api users or third-party designer. For BIRT designer, it will guarantee this value always not null.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/IModuleOption.java
{
	/**
	 * Key to control whether to call semantic-check when opening a module. True
	 * if user wants to do some semantic checks about the module when opening
	 * it; otherwise false.
	 */
	static final String PARSER_SEMANTIC_CHECK_KEY = "semanticCheck"; 
	/**
	 * Key to set the resource folder of the module.
	 */
	static final String RESOURCE_FOLDER_KEY = "resourceFolder"; 
	/**
	 * Key to indicate the resource locator of the module.
	 */
	static final String RESOURCE_LOCATOR_KEY = "resourceLocator"; 	
	/**
	 * Key to control whether to mark line number of the element in xml source.
	 * True if user wants to mark them during parsing and saving, false
	 * otherwise. Default value is true.
	 */
	static final String MARK_LINE_NUMBER_KEY = "markLineNumber"; 	
	
	/**
	 * Key to indicate the locale of the module.
	 */
	static final String LOCALE_KEY = "locale"; 	
}